Sodium (Na) requires the least amount of energy to remove the most loosely held electron from a gaseous atom in the ground state.
Why sodium requires least amount of energy to remove most loosely electrons?
One electron only makes up the outermost shell of sodium as its electronic configuration of sodium is 2,8,1. While bromine has seven electrons and calcium has two. Silver is also typically the least reactive. As a result, sodium is the element that can lose one electron with the least amount of energy.
To know more about electronic configuration, check out https://brainly.com/question/26084288
#SPJ4
what is the answer i will give brainllest
Answer:
This is a single replacement reaction
the molar mass of oxygen gas (o2) is 32.00 g/mol. the molar mass of c3h8 is 44.1 g/mol. what mass of o2, in grams, is required to completely react with 0.025 g c3h8? 0.018 grams 0.034 grams 0.045 grams 0.091 grams
The following is the reaction's balanced chemical equation:
C3H8 + 5O2 = 3CO2 + 4H2O ,
According to a molar ratio of 1:5, the number of moles of C3H8 that were involved in the reaction was 0.025 g / 44.1 g/mol = 0.000567 mol. The number of O2 moles needed is 5 times the number of C3H8 moles that were reacted, hence the number of O2 moles needed is 0.000567 x 5 = 0.00284 mol. The needed mass of O2 is 0.00284 mol times 32.00 g/mol, or 0.091 mol. response is 0.091 mol
In chemistry, what does a molar mass mean?A substance's molar mass is defined as its mass in grams per mole. As seen in this video, the molar masses of a substance's constituent atoms may be added to determine the substance's molar mass.
To know more about Molar mass visit:
https://brainly.com/question/22997914
#SPJ4
In a balanced chemical equation, a. Atoms are conserved. B. Coefficients are equal. C. Molecules are equal. D. Energy is not conserved.
Atoms are conserved in a chemical equation that is balanced. The choice that is best is A. We can see two copper, four chloride, four iodine, four potassium, and four atoms present
What sort of chemical equation would you use?
Chemical equations are used to depict how reactants change into products. For instance, iron sulfide is created when iron (Fe) and sulfur (S) combine (FeS). FeS = S(s) + Fe(s) (s) An iron-sulfur interaction is indicated by the plus symbol.
What do chemical equation solutions consist of?
They were equations that use chemical symbols and formulae to express chemical reactions. The reactants are shown on the left side of a chemical equation, and the products were shown on the right.
To know more about chemical equation visit:
https://brainly.com/question/28294176
#SPJ4
an element can be described as shiny, brittle, and a weak conductor of electricity. this element is most likely a
An element could be described as shiny, brittle, and weak conductor of electricity. This element is most likely a metal.
A metal could be a chemical element which includes iron; an alloy including stainless steel; or a molecular compound together with polymeric sulfur nitride. In physics, a metal is normally appeared as any substance capable of accomplishing power at a temperature of absolute 0.
They have got lusture and a steel appearance. They're commonly within the shape of a solid at room temperature. They're superb conductors of energy and heat. Metals are malleable and ductile. They are lustrous any shiny too.
Learn more about metals here:- https://brainly.com/question/25597694
#SPJ4
what is the net ionic equation for the complete neutralization reaction between the strong acid hno3 (aq) and the strong base ba(oh)2 (aq)? what is the driving force for the reaction?
The net ionic equation for the complete neutralization reaction between the strong acid hno3 (aq) and the strong base ba(oh)2 (aq) is 2H+ +2OH- --->H2O(l) and the driving force for the reaction is formation of H2O(l)
The net ionic equation for the complete neutralisation reaction between strong acid HNO3(aq) and Ba(OH)2 (aq) is as follows;
Ba(OH)2(aq)+HNO3(aq)---Ba(NO3)2(aq)+2H2O(l)
Splitting into ions, we get
Ba2+ + 2OH- +H+ +NO3- --- Ba2+ +2NO3- +2H2O(l)
The net ionic equation is 2H+ +2OH- --->H2O(l)
The driving force of this reaction is equivalent of acids is reacting with equivalents of base and hence neutralisation reaction takes place.
The driving force for this neutralisation reaction is formation of H2O(l)
To learn more about ionic equation visit:
brainly.com/question/15467502
#SPJ4
For a specific unknown sample of matter, the molecules are; moving fast, compressible, and can change their shape. Which of the following examples of matter is the identity of the unknown sample of matter?gaseous air
Gaseous air is the sample of matter whose molecules are moving fast, compressible, and can change their shape.
Matter exists in three different states: solid, liquid, and gas. Solids have a distinct volume and shape. Although they have a specific volume, liquids adopt the shape of the container. Gases lack a distinct volume or shape. The particles of gases are fast moving, compressible and can occupy the container in which they are put.
According to the kinetic molecular theory of gases, this state of matter is made up of microscopic particles that are constantly moving apart from one another and squabbling against the container's walls and one another. These collisions are elastic, meaning that there is no overall energy loss as a result of them. All gases have the same average kinetic energy when they are at the same temperature because the average kinetic energy of gas particles is proportional to the absolute temperature of the gas.
To know more about gaseous state of matter, refer to the following link:
https://brainly.com/question/16982523
#SPJ4
calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from ????
The energy of a photon emitted when an electron in a hydrogen atom undergoes a transition is equal to the energy difference between the two energy levels involved.
This can be calculated using the equation:
Energy (in Joules) = hc/λ
where h is Planck's constant (6.626 x 10^-34 J·s), c is the speed of light (299,792,458 m/s), and λ is the wavelength of the photon (in meters).
What is a Photon?
A photon is a light particle that serves as the fundamental unit of all forms of electromagnetic radiation. Photons are massless and chargeless particles that travel at the speed of light. They carry the electromagnetic force and are responsible for the majority of the phenomena associated with light, such as visible light, radio waves, and X-rays.
Explain electron?
A subatomic particle with a negative electric charge is known as an electron. It is the most basic and smallest particle of matter. Electrons are found in every atom and are responsible for chemical bonds.
Explain hydrogen atom?
A hydrogen atom is the most fundamental type of atom. It is made up of a single proton and a single electron held together by the electromagnetic force. It is the simplest and most abundant type of atom in the universe.
To know more about Photons,
LINK- https://brainly.com/question/18101137
CODE- #SPJ4
the initial molarity of the cu2 and zn2 solution used in the setup of the electrochemical cell was 1 m. explain why the voltage was not equal to the standard cell potential for the cu/zn redox reaction at all times during the experiment.
Due to the shielding of the zinc s electrons by the electrons in filled d orbitals, the valence electrons in zinc in the Zn/Cu system have a significantly higher potential energy than the valence electrons in copper.
We can measure the standard electrode potential of the system Mg2+ | Mg by using a standard hydrogen electrode as an anode and a Mg2+ | Mg as a cathode. Standard hydrogen electrode: Pt(s), H2(g) (1 atm), H+ (aq), and magnesium wire electrode dipped in 1M MgSO4 solution.
Learn more about the MgSO4
https://brainly.com/question/20817087
#SPJ4,
a certain half-reaction has a standard reduction potential 0.07 v. an engineer proposes using this half-reaction at the anode of a galvanic cell that must provide at least of electrical power. the cell will operate under standard conditions. note for advanced students: assume the engineer requires this half-reaction to happen at the anode of the cell.
The cathode half cell will have no maximum reduction potential and the engineer can choose an appropriate cathode that will deliver atleast 0.13V or more power
What is a cathode ?
An electrical device with polarized current has a metallic electrode called a cathode through which current is discharged. The electrode in a polarized electrical device via which current enters from an external circuit is known as an cathode, on the other hand.
what is an half-reaction?
The portion of a larger reaction known as a half-reaction constitutes either an oxidation or a reduction on its own. For a redox reaction to be fully described, it requires two half-reactions, one oxidation and one reduction.
The given half cell will work as the anode of the galvanic cell. Oxidation occurs at the anode and the standard oxidation potential E0ox = -E0red. Therefore, the given half cell will have oxidation potential E0ox = -(-1.07 V) = +1.07 V.
The cell potential is given as E0cell = E0red + E0ox and the cell potential will have a value of atleast 1.20 V. Therefore, put E0cell = 1.20 V and get
E0red = E0cell – E0ox = (1.20 V) – (1.07 V) = 0.13 V.
If the cathode half cell has a reduction potential less than 0.13 V, then the cell potential of the galvanic cell will fall below 1.20 V. Hence, the cathode half cell must have a minimum standard reduction potential of +0.13 V
The cell is supposed to deliver atleast 1.20 V power. However, the cell can deliver more than 1.20 V power. Say, the cell delivers 1.30 V power. Then putting E0cell = 1.30 V, we have,
E0red = (1.30 V) – (1.07 V) = 0.23 V.
Hence, the cathode half cell will have no maximum reduction potential and the engineer can choose an appropriate cathode that will deliver atleast 0.13V or more power.
Learn more about cathode from the given link.
https://brainly.com/question/25879572
#SPJ4
Jordan adds 20 grams (g) of salt and 200 g of dry beans to a pot of warm water. Jordan made.
A polar solute will dissolve in a polar solvent, while a non-polar solute will dissolve in a non-polar solvent. Option C is the right choice as a result. That is the salt in the water dissolving in Jordan
And the beans settling to the bottom of the saucepan. Solutions are mixtures of two or more substances that are homogenous. A solution is a uniform mixing of molecules from the solvent and the solute. A material that is highly dissolved in a solution is called a solvent. A solute is a material that is present in a solution in small amounts. 200 g of dried beans are added to warm water along with 20 g of salt, which is then mixed and allowed to sit for 15 minutes observed by Jordan. The polar solute in the list is salt (sodium chloride).
Learn more about polar solute here
https://brainly.com/question/14129775
#SPJ4
The complete question is-
Jordan adds 20 grams (g) of salt and 200 g of dry beans to a pot of warm water. He stirs the salt and bean into the water and then lets it sit for 15 minutes. What should Jordan expect to observe after those 15 minutes?
When the adhesive forces between a liquid and the walls of a capillary tube are greater than the cohesive forces within the liquid.
The liquid will rise above the surrounding liquid due to the attractions when the adhesive forces are stronger than the cohesive forces between a liquid and the walls of a capillary tube.
What is capillary tube?In a mechanism known as capillary action, liquid flows up into very thin tubes made of rigid materials such as plastic or glass termed capillary tubing or capillary tubes (capillarity). a tube used to regulate the flow of refrigerant that has an interior diameter and length that are calibrated. Additionally, it links the remote bulb to the thermostat and/or the thermostatic expansion valve.
What is capillary tube formula and its example?Surface tension is another factor that causes a liquid column inside of a tiny capillary tube to rise. (h)=2Trg is the formula for capillary rise.
Capillary action is exemplified by the uptake of water in porous materials like plaster and paper, the wicking of paint between brush hairs, and the transport of water through sand.
To know more about Capillary Tube visit:
https://brainly.com/question/14472773
#SPJ4
assume that in a cell the ratio(s) listed is/are high. which ratio(s) would lead to a decrease in the rate of entrance of acetyl coa into the citric acid cycle?
NADH/NAD+ ratio would lead to a decrease in the rate of entrance of acetyl coa into the citric acid cycle.
The Krebs cycle, often referred to as the TCA cycle (tricarboxylic acid cycle), and the citric acid cycle (CAC) are chemical processes that release stored energy through the oxidation of acetyl-CoA obtained from carbs, lipids, and proteins. Organisms that respire (as opposed to organisms that ferment) use the Krebs cycle to produce energy, either through anaerobic or aerobic respiration. The cycle additio0nally supplies the reducing agent NADH and precursors of a few amino a.cids that are needed in a variety of other processes. It may have developed abiogenically and was one of the earliest components of metabolism given its prominent role in numerous metabolic processes. [3] [4] Although it is advertised as a "cycle," metabolites need not adhere to it.
Learn more about citric acid cycle here:
https://brainly.com/question/11459709
#SPJ4
the half-life of strontium-90 is 28 years. how long will it take a 80-mg sample to decay to a mass of 48 mg? (round your answer to the nearest whole number.)
The half-life of strontium-90 is 28 years. how long will it take a 80-mg sample to decay to a mass of 48 mg is 56years.
What is half life?
The duration of time it takes for one-half of a radioactive isotope to decay is known as the half-life. A particular radioactive isotope's half-life is constant; it is unaffected by external factors and is unrelated to the isotope's starting concentration.
What is decay?
A reduction in quantity, activity, or force, as in. Chemistry: Radioactive material's radioactive atoms naturally start to decrease in number. Natural disintegration in physics (as of an atom or a particle).
Therefore, half-life of strontium-90 is 28 years. how long will it take a 80-mg sample to decay to a mass of 48 mg is 56years.
Learn more about half-life from the given link.
https://brainly.com/question/18630925
#SPJ4
number of electrons: 3???? electrons how many of those electrons are unpaired? number of unpaired electrons:
To calculate the number of unpaired electrons, first determine the element's atomic number, then write the configuration in the ground state, and then subtract the number of electrons from the outer shell based on the oxidation state. So there are four unpaired electrons. So there are three unpaired electrons.
This means that these electrons are not paired or occur as electron couples. We can easily determine whether an atom has unpaired electrons by writing down its electron configuration. Atoms with these electrons have paramagnetic or ferromagnetic properties.
Learn more about the electrons
https://brainly.com/question/19480525
#SPJ4,
take stereochemistry into account and describe expected stereoisomers if any. of the following products, which will be formed as a racemic mixture. select all that apply
The solution comes with a list of the products that will be created by the chemical reaction in question.
We discover that allylic bromination occurs in this situation. On a benzylic/allylic carbon, it is the replacement of bromine for hydrogen. N-bromosuccinimide carries out this procedure (NBS for short). The double bond is followed by the bromine substitution (this is called the allylic position).
Depending on the symmetry of the alkene reactant, the products may differ. If a symmetric alkene reactant is used, just one product will be create. Due to the two separate allylic locations, a mixture of products is created in the case of an asymmetric alkene product .A copy of the question in its entirety is given
To learn more about alkene please click on below link
https://brainly.com/question/13910028
#SPJ4
Many organic reactions involve more than a single step. A reactive species that formed in one step and used up in the next is called a reactive _____. Such a reactive species can sometimes be isolated, even though it may be short-lived, unlike the ____ state, which is the unstable energy maximum for each step.
A reactive species that formed in one step and is used up in the following reaction is called a reactive: (intermediate). Sometimes, it can be isolated, even though it may be short-lived, unlike the: (transition state).
What is the difference between the reactive intermediate and the transition state?An intermediate from a reactive species has a discrete lifetime, from as long as many days to just a few nanoseconds. Meanwhile, a transition state lasts just one bond vibration cycle. The other difference they have is an intermediate tends to be stable with high energy (although it is less stable than its reactants and products). In contrast, the transition state tends to be less stable than the intermediate.
Learn more about transition state here https://brainly.com/question/28787180
#SPJ4
What is the relationship between dipole moment and the distance between the charges?
directly proportional
inversely proportional
they are equivalent
they are unrelated
directly proportional
The option (a) is correct - directly proportional
What is an dipole?
When two charges are spaced apart, they form a dipole, which consists of oppositely charged pairs of charges with equal magnitudes. When there is a difference in charges, or more precisely when the atoms that make up the molecule have an electric charge, dipoles are present.
What is an charges?
The physical quality of matter—its electric charge—is what causes it to feel a force when exposed to an electromagnetic field. Protons and electrons, the two types of charge carriers, typical carry positive and negative electric charges.
Therefore, option (a) is correct - directly proportional
Learn more about dipole from the given link.
https://brainly.com/question/11626115
#SPJ4
Aseptic processing involves
a. quick freezing food after it is prepared.
b. drying foods to decrease water content.
c. sterilizing the package and food separately and then packaging the food.
d. the addition of chemical preservatives.
Aseptic process involves sterilizing the package and food separately and then packaging the food. So the option C is correct.
Aseptic process is a process which involves placing of a sterilized product into a sterilized package and then sealing the product under the sterilized conditions. It ensures that the product is without any bacteria. Many products degrade when gone through the harsh conditions of sterilization but aseptic processes allows the safe production of all those products.
Aseptic manufacturing requires constant environmental monitoring, specially trained and experienced workers to perform the operations, specialized equipment, and cleaning procedures. If the aseptic process is compromised, there is a serious risk to both the product and the patients.
Aseptic packaging is also a type of thermal sterilization. It is process in which commercially sterilized food item is placed in a sterilized package followed by sealing under aseptic environment. It is highly recommended for the preservation of tomato paste, and fruit juices. Heat treatment, chemical application, or both can be utilized for sterilization in this process. Paper and plastic are generally used in conventional aseptic packaging.
Basically, there are two approaches of aseptic packaging:
direct approachcomposed of steam infusion and steam injunction
indirect approachcomprises scrapped surface heat exchanger, plate heat exchanger, and tubular heat exchanger
To look more about aseptic methods click here
brainly.com/question/14316200
#SPJ4
does clapeyron equation, in thermodynamics, help to determine the enthalpy of vaporization hfg at a given temperature from the p, v, t data alone?
Yes, using only the p, v, and t values, the Clapeyron solution in thermodynamics may be used to compute the energy of vaporization at a particular temperature.
What does the chemistry term "equation" mean?Reaction equation are symbolic depictions of chemical reactions where the reactants and products are stated in relation to the following chemical formulae.
Equation and response are what?What is an equations and a chemical reaction? In a chemical change, bonds between molecules of the reagent are destroyed and new bonds between molecules of the product are established to create a new substance. A chemical formula is nothing more than a statement of fact that represents how reactants generate products.
To know more about Equation visit:
brainly.com/question/28818520
#SPJ4
Is the pH greater than, equal to, or less than 7 after the neutralization of each of the following pairs of acids and bases? -NH3 and HClO4 -NaOH and benzoic acid -KOH and HBr -(CH3)3N and HOBr
Any stron electrolyte can dissociate completely into its ions but for weak electrolyte only certain number of ions are dissociated so pH depends on the dissociated ions.
What is an acids and bases?
Any hydrogen-containing material that has the ability to donate a proton (hydrogen ion) to another chemical is considered to be an acid. Acidic chemicals are typically recognized by their sour flavor.
What is a ph?
an evaluation of how basic a substance or solution is. On a scale from 0 to 14, pH is measured. A pH value of 7 is considered neutral on this scale, which implies it is neither acidic nor basic. It is more acidic if the pH value is less than 7, and more basic if the pH value is greater than 7.
pH < 7 for NH3 and HCLO4 since the acid is strong acid and the base is weak base.
pH > 7 for NaOH and Benzoic acid since the base is strong base and acid is a weak acid .
pH = 7 for HBr anf KOH since both are strong acid and strong base
pH < 7 or pH > 7 since bith are weak acid and weak base.
Therefore, Any stron electrolyte can dissociate completely into its ions but for weak electrolyte only certain number of ions are dissociated so pH depends on the dissociated ions.
Learn more about acids and bases from the given link
https://brainly.com/question/9836972
#SPJ4
isopropyl alcohol is mixed with water to produce a 40.0% (v/v) alcohol solution. how many milliliters of each component are present in 635 ml of this solution? assume that volumes are additive.
In 635 mL of this solution, there are 365 mL of water and 270 mL of alcohol, respectively.
As the 40.0% (v/v) alcohol solution is provided to us. In other words, there is 40.0 mL of alcohol in 100 mL of solution.
The amount of alcohol in the 635 mL solution must now be calculated.
As 40.0 mL of alcohol are present in 100 mL of solution.
As a result, 635 mL of the solution include alcohol.
Alcohol therefore has a capacity of 270 mL.
We must now determine the water's volume.
Volume of water = Volume of solution - Volume of alcohol
Volume of water = 635 mL - 270 mL
Volume of water = 365 mL.
As a result, there are 365 mL of water and 270 mL of alcohol, respectively, in 635 mL of this solution.
To learn more about Volume concentration, here :
https://brainly.com/question/13938336?referrer=searchResults
#SPJ4
there are 20 common, naturally occuring amino acids. modify the given ompies of compund 1 to draw the stuctures of 2 and 3
Antimarkkorvnikov product is formed when HBr addition occurs to the double bond in the presence of photochemical conditions, and the products formed will be diastereomers.
In the addition reaction, step one is the homolytic cleavage of the HBr Bond which forms the H radical and Bromine radical also the alkene will form a bond with the bromine radical and forms a tertiary radical and then the tertiary radical forms a bond with hydrogen radical and forms the two products with different configurations and these products are Diastereomers since one product have S and R and another product has S S Configuration.
To read more about Antimarkkorvnikov products, visit https://brainly.com/question/15350595
#SPJ4
if four molecules of carbon dioxide enter the calvin cycle (four "turns" of the cycle), how many g3p molecules are produced and how many are exported?
If four molecules of carbon dioxide enter the Calvin cycle (four turns of the cycle), eight G3P molecules are produced and four G3P are exported.
Carbon dioxide molecule (CO₂) enters the Calvin cycle in the presence of RuBisCO enzyme and interacts with a five-carbon molecule named as ribulose-1,5-biphosphate(RuBP). This interaction creates two molecules of a three-carbon chemical named as 3-phosphoglyceric acid (3-PGA).
These 3-PGA molecules, with the help of ATP and NADPH(G3P) are transformed into a three-carbon sugar named as glyceraldehyde-3-phosphate.
One G3P molecule is utilized to create glucose molecule and the remaining G3P molecules are recycled which regenerates RuBP.
Thus, for every four turns of the Calvin cycle, eight G3P molecules are produced and four G3P molecules are exported.
To know more about Calvin cycle here
https://brainly.com/question/28779056
#SPJ4
why should salt be prepared in a dry environment
Answer:
because salt has a properties of disolving
if the difference in electronegativity (δen) between two atoms is 0.2, how would the bond formed between those atoms be classified?
As the electronegativity difference between the two atoms is greater than 2.0 then it is considered as an ionic bond.
What is Ionic Bond?
When all one or more electrons are totally transferred from one atom to the other, the atoms assume their closest inert gas state and form a chemical bond.
To shed energy and become stable, two atoms can come together fundamentally in three different ways. They can give or receive electrons to complete their octet structure. It is known as an ionic bond or electrovalent bond when this kind of combination results in a bond. A link of this kind is created when one atom gains electrons from its outermost level or orbit while the other atom is depleting electrons.
When a shared pair of electrons is not distributed equally, a polar covalent bond is created. This is caused by the electronegativity difference between the two elements. Only when the difference in electronegativity between the two atoms is between 0.5 and 2.0 can this bond be created.
Given that there is an electronegativity difference of 2.4 between the two atoms, the link that has been created between them can be categorised as an ionic bond.
Learn more about Ionic Bond from given link
https://brainly.com/question/13526463
#SPJ4
solubility curves are used to determine if a solution is unsaturated, saturated, or supersaturated at a specific pressure. true or false
Solubility curves are used to determine if a solution is unsaturated, saturated, or supersaturated at a specific pressure is a true statement.
Solubility curves are graphs that show the amount of a substance that can be dissolved in a given amount of liquid at a given temperature. The curves are usually plotted on the x-axis with the temperature and on the y-axis with the amount of solute dissolved.
Solubility curves are used to predict the solubility of a solute in a given solution at a given temperature. Solubility curves can also be used to explain the effect of temperature on solubility. For example, when the temperature increases, the solubility of a solute will increase, and vice versa.
Solubility curves can also be used to explain the effect of pressure on solubility. As the pressure increases, the solubility of a solute will decrease, and vice versa. Solubility curves can also be used to explain the effect of pH on solubility. As the pH increases, the solubility of a solute will decrease, and vice versa.
It is thus useful in understanding about the solution whether it is saturated, unsaturated or super saturated and so on.
To know more about unsaturated solutions, click here:
https://brainly.com/question/16446777
#SPJ4
) what are the maximum (peak) mixing ratios of ozone (o3), nitric oxide (no), and nitrogen dioxide (no2) during these eight days?
Nitrous oxide is destroyed in the stratosphere and removed from the atmosphere more slowly than methane, persisting for around 114 years.
Ozone, or trioxygen, is an inorganic molecule with the chemical formulation O ₃. it is a pale blue fuel with a distinctively pungent odor. it is an allotrope of oxygen that is a whole lot less solid than the diatomic allotrope O ₂, breaking down in the lower environment to O ₂.
Ozone can harm the tissues of the respiration tract, inflicting inflammation and inflammation, and result in signs together with coughing, chest tightness, and irritation of bronchial asthma signs. further, ozone reasons big damage to crops, forests, and native flora.
Ozone is an odorless, colorless gas made up of 3 oxygen molecules O3, and is a natural part of the surroundings. It occurs both within the Earth's upper surroundings, or stratosphere, and at a ground degree in the lower surroundings, or troposphere.
Learn more about ozone here:-https://brainly.com/question/13730571
#SPJ4
when you are left with 6.25 mg of the radioactive isotope, how many minutes would have passed from time equals zero? (5 points) 1.0 minutes 3.0 minutes 6.0 minutes 12 minutes
3 minute would have passed from time equals zero
Calculation
The half-life of a radioisotope is the time it needs for the mass of the radioisotope to halve with respect to its original value.
In this problem, the initial mass of the radioisotope at t=0 is
m0 = 50.0 mg
We see that after t = 1 min, the mass of the isotope is
m(1 min) = 25.0 mg
so, exactly half the initial mass: this means that 1 minute is exactly the half-life of this radioisotope.
So, the amount of mass left after each minute is the following:
m (1 min ) = 25.0 mg (1 half-life)
m (2 min) = 12.5 mg (2 half-lives)
m (3 min) = 6.25 mg (3 half-lives)
so, when we are left with 6.25 mg of isotope, 3 minutes have passed, which means that 3 half-lives have passed.
Learn more about radioisotope here:
brainly.com/question/13076859
#SPJ4
Biodiesel—a fuel comprising long-chain fatty acid methyl esters (FAMEs) derived from vegetable oils or animal fats, designated B100 and meeting standard requirements.
Biodiesel is a type of diesel fuel made from long-chain fatty acid esters derived from plants or animals. Thus this statement is true.
What is biodiesel ?Biodiesel is a domestically produced, clean-burning, and renewable alternative to petroleum diesel. Using biodiesel as a vehicle fuel improves energy security, air quality and the environment, and safety.In contrast to the vegetable and waste oils used to power converted diesel engines, biodiesel is a drop-in biofuel, which means it is compatible with existing diesel engines and distribution infrastructure.However, because most engines can't run on pure Biodiesel without modification, it's usually blended with petroleum-based diesel. Biodiesel blends can also be used as heating oil.Recycled grease that has not been converted to biodiesel, raw or refined plant oil, or refined plant oil is not biodiesel and should not be used as vehicle fuel.To learn more about biodiesel refer :
https://brainly.com/question/27438595
#SPJ4
rank the following compounds in order of increasing boiling point, putting the compound with the lowest boiling point first.
Taking the item with the lowest boiling point first. I II III arrange the following substances according to their rising boiling points.
The definition of a compound example.A material formed by the chemical fusion of two or more different components in science Water (H2O), which is produced from the elements hydrogen and oxygen, and table salt (NaCl), which is made from sodium and chloride, are two examples of compounds.
What are some examples of the eight organic compounds?Covalent bonds between carbon and hydrogen, as well as commonly additional atoms, are used to create organic compounds. Benzoic acid, diethyl malonate, propanoic, butanoic, and malonic acids are a few examples of organic compounds, along with aromatic and heterocyclic substances.
To know more about Compound visit:
brainly.com/question/14117795
#SPJ4
Answer:
A: 4
B: 2
C: 3
D: 1
Explanation: