The density if the dinitrogen difluoride gas at the temperature of 30 °C and the pressure of exactly 1 atm is 2.6 g/L.
Given that :
The temperature = 30 °C
The pressure = 1 atm
The ideal gas equation is given as :
P V = n RT
Density = mass / volume
d = m / V
n = mass / molar mass
P V = (d V / M) R T
d = P M / R T
d = (1 × 66) / ( 0.082 × 303)
d = 2.6 g/L
Thus, the density is 2.6 g/L.
This question is incomplete, the complete question is :
Calculate to three significant digits the density of dinitrogen difluoride gas at exactly 30 °C and exactly 1 atm. You can assume dinitrogen difluoride gas behaves as an ideal gas under these conditions
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According to this passage what can we calculate about cleavage 
Passage in photo and answers in photo !
Answer:
E. Cleavage of diamonds is a random property and differs from stone to stone.
iron has a density of 7.86 g/cm3 . Calculate the volume (in dL ) of a piece of iron having a mass of 4.62 kg . Note that the density is provided in different units of volume and mass than the desired units of volume ( dL ) and the given units of mass ( kg ). You will need to express the density in kg/dL ( 1 cm3 = 1 mL ) before calculating the volume for the piece of iron.
Answer:
To calculate the volume of the piece of iron, we need to divide its mass by its density. But first, we need to express the density in the same units as the mass, which is kg/dL. To do this, we need to convert the density from g/cm3 to kg/dL.
1 cm3 = 1 mL = 0.001 L
1 dL = 0.1 L
Therefore, 1 cm3 = 0.001 L = 0.1 dL
Also, 1 g = 0.001 kg
Therefore,
density in kg/dL = (density in g/cm3) * (1 kg/1000 g) * (0.1 dL/1 cm3)
= 7.86 g/cm3 * 0.001 kg/g * 0.1 dL/cm3
= 0.00786 kg/dL
Now we can use this density to calculate the volume of the piece of iron:
Volume = mass / density
= 4.62 kg / 0.00786 kg/dL
= 5892.9 dL
So, the volume of the piece of iron is 5892.9 dL.
which of the following will not interfere with the reagent strip test for leukocytes? group of answer choices formaldehyde nitrite
Ascorbic acid will not interfere with the reagent strip test for leukocytes.
What is ascorbic acid?Ascorbic acid, often known as vitamin C, is an organic molecule that occurs naturally. It is a water-soluble vitamin that is necessary for the immune system to operate properly, for the skin to produce collagen, and for the body to absorb iron.
Why ascorbic acid does not interfere with reagent strip test for leukocytes?Because ascorbic acid cannot be detected by the test. Leukocyte reagent strip tests often involve the use of a particular chemical reagent, such as nitrofurantoin or esculin, which reacts with the enzymes contained in leukocytes to generate a noticeable color shift.
Ascorbic acid does not react with the reagent used in the test because it does not share the same chemical characteristics as leukocytes.
Which of the following factors will not interfere with the reagent strip test for leukocytes?
A) ascorbic acid
B) formaldehyde
C) nitrite
D) urinary protein level of 500 mg/dL
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how many moles are in 559 grams of Mg(CIO3)2
The number of moles which are in 559 grams of Mg(CIO3)2 is 2.92mol.
What is Mole?This is referred to as the unit of the quantity amount of substance and is also defined as a measure of how many elementary entities of a given substance are in an object or sample.
The formula is mole = mass/molar mass.
Mg(CIO3)2 has a molar mass of 191.20g/mol
Mole = 599/191.20 = 2.92mol.
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Accuracy of which of the following equipment will be analyzed in this experiment: (If you are unsure; consult the lab experiment write-up:) Select one or more: A. Thermometer 50 mL B. Graduated Cylinder 10 mL C. Pipet Analytical Balance Buret 10 mL D. Graduated Cylinder
C. Pipet Analytical balance,It is expected that the accuracy of the following equipment will be examined depending on the equipment listed: Thermometer Graduated Cylinder Thermometer Buret C.
Pipet Analytical balance, part E These tools are frequently used in scientific experiments to measure volume, temperature, and weight. It's also crucial to understand the difference between accuracy and precision. While precision refers to the reproducibility of a series of measurements, accuracy relates to how near a measurement is to the real value of the quantity being measured.While 10 ml graduated cylinders feature marks every tenth of a milliliter, most 50 ml graduated cylinders have markings spaced every milliliter. Our measurement should be more precise if we use a 10 ml graduated container than if we use a 50 ml graduated container. We refer to an instrument as being ACCURATE if it produces values that are extremely near to the genuine value. Example: The same sample was measured three times using a graduated cylinder, yielding readings of 566 mL, 584 mL, and 541 mL. These three figures add out to 563.7 mL on average.
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for the following chair conformations of 1,3-dibromocyclohexane, determine the orientations of the two substituents, and determine if the conformation is cis or trans.
The way the bonds are built will determine how they are oriented. Additionally, the relative orientation of bonds affects conformation. Dibromocyclohexane is used to study the conformation.
How can you tell whether a molecule is chiral or not?Having a few very notable exceptions, the general rule is that molecules with at least one stereocenter are chiral, while molecules with no stereocenters are achiral. In most circumstances, an easiest approach to determine whether a molecule is chiral or achiral is to seek for one or even more stereocenters.
What does cis in cyclohexane refer to?Two substituent groups inside the same plane are regarded to be the cis isomer of cyclohexane (either equatorial or axial). Cis-1-methyl-4-hydroxymethyl cyclohexane is cyclohexane with a methyl group in the axial plane (-CH3)also the hydroxyl group (-OH).
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for each of the following reactions, write a balanced chemical equation. a)equimolar solutions of cobalt (iii) bromide and lithium sulfide are mixed
Lithium sulfide and cobalt (III) bromide are mixed in equimolar solutions. Chemical equation that is balanced:
CoBr3(aq) + Li2S(aq) ---> LiBr(aq) + CoS(s)In the equation CoBr3(aq) + Li2S(aq) ---> LiBr(aq) + CoS(s), each component can be identified as follows:
CoBr3(aq): cobalt (III) bromide in aqueous solutionLi2S(aq): lithium sulfide in aqueous solutionLiBr(aq): lithium bromide in aqueous solutionCoS(s): cobalt sulfide, a solid compoundIn this reaction, cobalt (III) bromide and lithium sulfide react to form lithium bromide and cobalt sulfide. The reactants are equimolar solutions, meaning that there are equal amounts of each reactant. When the two solutions are mixed, the cobalt (III) ions and lithium ions come into contact and form an ionic bond, which results in the formation of new solid cobalt sulfide and aqueous lithium bromide.
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Why is there no reaction if you remove mercury oxide,HgO from the reaction?
The reaction stops because the reaction is a decomposition reaction.
What is a reaction?We have to note that there is a reaction when there is change of the reactants that are in the system to the products. We have to note that in this case. we have the decomposition of the mercury oxide.
Since it is a decomposition reaction, we can see that there is a break down of the mercury oxide to give rise to the oxygen and to the mercury as such if we remove the mercury oxide the reaction stops.
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A sample of gold has a mass of 23.82
The volume of the gold sample, given the theoretical density and the mass, is 1.23 ml
How to find the volume ?When given the theoretical density of a gold sample and the mass, you can use the formula for density to find the volume of the gold sample.
The volume for density is:
Density = Mass / Volume
Mass = 23. 82 g
Density = 19. 30 g / ml
The volume is:
19.30 = 23 .82 / Volume
Volume x 19. 30 = 23. 82
Volume = 23. 82 / 19. 30
= 1.23 ml
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The full question is:
A sample of gold has a mass of 23.82 g, given that the theoretical density is 19.30 g/ml, what is the volume of the gold sample?
The equilibrium constant for the reaction represented by the equation below is greater than 1.0. Which of the following gives the correct relative strengths of the acids and bases in the reaction?H2PO4− + HBO32− ⇄ HPO42− + H2BO3−Acids BasesA.H2PO4− > H2BO3− and HBO32− > HPO42− B.H2BO3− > H2PO4− and HBO32¯ > HPO42− C.H2PO4− > H2BO3− and HPO42− > HBO32− D.H2BO3− > H2PO4− and HPO42− > HBO32− E.H2PO4− = H2BO3− and HPO42− = HBO32−
Giving the right relative importance of the bases and acids used in the reaction is H2PO4 > H2BO3 and HBO32 > HPO42.
What are acids, exactly?A chemical that produces salts and release hydronium ions into water when it reacts with any of these metals. Acids have one sour taste and give some colours a reddish tint. Chemicals taste acidic whenever dissolved in water and conduct electricity, and combine with metals to produce oxygen and hydrogen. Litmus is one indicator compound that can be used to identify acids. Acids cause the blue litmus material to turn red. One type of acid is sodium hydroxide.
Which one has the strongest acid?For example, pure sulfuric acid has a shocking pH of -12 while nitric acid has a pH of 1.08 and bleach has a pH of 1.6. So, the strongest "regular" acid you will encounter is weakly acidic.
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An atom of nitrogen has 7 protons, 7 electrons, and 7 neutrons. What is the atomic mass of the nitrogen atom?
Answer:
Explanation:
The atomic mass of the nitrogen atom is 14
Help on 1.15 please!!
In this case, multiplying 0.35 by 55 gives us the number 19. 25.2 m squared plus three squares is a match. This is equivalent to the third square of 20 by 25.4.
What is significant numbers?We will use the least number of decimal places for addition and subtraction of important values supplied 20 0.9 kg minus 12.90 kg divided by 10 liters thus far. So there are two decimal places in this. Then, 8.0 kg divided by 100 gallons will equal 20.99 install 0.90 sequel to eight point and apologize. Therefore, take note that the least amount of significance you have is three significant numbers. As a result, this is likewise equivalent to 0.8 kg each item. We need to divide 45.82 g by three cm, 0.64 g by 0.859 cm, and 0.64 g by three cm for a letter B. Therefore, we must first solve for the parenthesis in this case. so 27 cm divided by 45.82 g. Q.divided by 0.634 cm, my nose weighs 0.64 g. Do the math with two. The division is then distributed when we are ready to resolve it. This therefore amounts to 1.7 g per centimeter. We have 1.7 gram cm Q divided by two, or Q miners 6.0 times 10 to the negative three g per centimeter cube. This is the same as 0.9 grams per centimeter. Finally, we have 0.35 m times 1.5 m, or the final 25.2 m squared, for literacy. In this case, multiplying 0.35 by 55 gives us the number 19. 25.2 m squared plus three squares is a match. This is equivalent to the third square of 20 by 25.4.To learn more about significant numbers refer to:
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5. Explain the reactivity of the the elements in 2 groups of the periodic table
The reactivity of the elements in group 2 would increase down the group.
What is the reactivity?We have to note that when we are talking about the reactivity of the elements we are looking at how easiliy the elements are able to engage in the process of chemical combination.
For the group two elements, they are highly reactive but not as reactive as the elements that we can find in group 1. The reactivity of the element is that are in group 2 would increase as we move down the group of the elements.
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Why do elements not have a numerical value for standard heats of formation and Free energies of formation but do have a numerical value for standard molar entropies?
Because it takes no energy to generate a naturally occurring compound, the enthalpy of formation for an element in its elemental state will always be 0.
What do you mean by formation standard free energies?The free energy shift that happens when 1 mole of a material is created from its component elements in their standard states is referred to as the standard free energy of formation. The standard free energy of production of a pure element in its standard state is zero.
The distinction between Gibbs free energy and standard free energy is that the former is dependent on the experimental circumstances, whilst the latter describes the Gibbs free energy for reactants and products in their standard state.
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FILL IN THE BLANK. A __ reaction is a process in which a covalent or ionic bond is broken or formed.
A chemical reaction is a process in which a covalent or ionic bond is broken or formed.
A chemical reaction is a process that converts one or more compounds, known as reactants, to one or more distinct substances, known as products. Chemical elements or compounds are examples of substances.
A chemical reaction equation specifies the reactants and products, whereas a balanced chemical reaction equation specifies the reactants and products' mole relationships. The quantity of energy involved in the reaction is frequently mentioned. Reaction stoichiometry is the study of the quantitative aspects of chemical processes.
Synthesis (anabolic), decomposition (catabolic), and exchange are the t
Three primary types of chemical reactions involved in human physiology.
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The flask contains 25 mL of an unknown diprotic acid aqueous solution that reacts in a 1:2 stochiometric ratio with NaOH. Titrate the solution with NaOH to determine the concentration of the acid.
The concentration of the acid (the analyte) is determined using the formula below:
Ca = * Cb * Vb / 2* VaWhat is a titration?
Titration is a method of quantitative chemical analysis used to determine the concentration of an unknown substance known as the analyte.
Titrants are created as standard solutions with established concentrations and volumes as reagents. To ascertain the concentration of an analyte, the titrant reacts with an analyte solution. The titration volume is the amount of titrant that interacted with the analyte.
The concentration of the acid (the analyte) is determined using the formula given below as follows:
Ca = * Cb * Vb / 2* Va
where;
Ca is the concentration of the acidCb is the concentration of the baseVb is the volume of the baseVa is the volume of the acid.Learn more about titration at: https://brainly.com/question/186765
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If an athlete weighs 155 lb and has 15.0 % body fat by weight, how many pounds of fat does the athlete's body contain?
Help with beers law please I will rate brainliest
Answer:
Beer's law (sometimes called the Beer-Lambert law) states that the absorbance is proportional to the path length, b, through the sample and the concentration of the absorbing species, c: A α b · c. The proportionality constant is sometimes given the symbol a, giving Beer's law an alphabetic look: A = a · b · c.
Explanation:
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heparin is a common anti-coagulant. to prepare an iv containing heparin and buffers, you acquire a large mixing tank. for this problem, assume a simplified system in which there are three inlet streams and one outlet stream. in mixing the solution, you keep track of two constituents: heparin and bicarbonate. streams 1, 2, and 3 enter the mixer; stream 4 leaves the mixer. stream 1 contains 300 mm heparin in water. stream 2 contains 200 mm bicarbonate in water. stream 3 contains water with no heparin or bicarbonate. the overall mass flow rate in stream 4 is 1000 g/min. the outlet stream contains 60 mm heparin, 30 mm bicarbonate, and water. assume that the density of every stream is 1.0 g/cm3 .
You may use the following equation to get each stream's mass flow rate: concentration times flow rate equals mass flow rate. Mass flow rate for Stream 1 is 300 mm (heparin) times flow rate determine by other means
The amount of fluid passing through a pipe or other conduit in a specific amount of time is measured as the flow rate. It is frequently expressed in terms of volume/time, such as gallons/minute or cubic meters/second. Numerous variables, such as the pipe's size and form, the fluid's pressure, and its viscosity, can have an impact on the flow rate. In some circumstances, the flow rate may be managed by valves or other equipment like flow metres or pumps. Numerous sectors, including water treatment, oil and gas extraction, and manufacturing, depend on knowing and managing flow rate. such as cubic feet per second (cf/s) or
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02 Question (6 points) 1st attempt IH See Periodic Table Name and define the four quantum numbers that identify the highest energy electron in a francium; Fr, atomic orbital; Symbol Value Principal quantum number Ancular momentum quantum number Magnetic quantum number Spin magnetic quantum number
The four quantum numbers that identify the highest energy electron in a francium, fr, atomic orbital are n, ℓ, m, and s.
Which four quantum numbers are there?The energy levels of an atom are connected by a set of quantum numbers. The entire and singular quantum state of a single electron in an atom, also known as its wave function or orbital, is described and explained by the four quantum numbers, n, l, m, and s. Accordingly, the four quantum numbers are n, l, m, and s.
The quantum number is used to define the location of electrons, and an orbital is a place inside the atom where an electron can be found. The quantum number of the shell orbitals of an atom depends on the number of electron shells it contains.
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How many kinds of chemically non-equivalent hydrogens are there in each of the following compounds? 3-Chlorocyclopentene The number of chemically non-equivalent hydrogens is ____
The number of chemically non-equivalent hydrogen is ____
There are three chemically non-equivalent hydrogens present in 3-chlorocyclopentene.
Non-equivalent hydrogens are groups which have the property of distinctive synthetic movements. We will find the same number of signs in an NMR spectrum along its lines due to the non-equivalent hydrogens.
These non-equivalent hydrogens can be determined by finding out whether a molecule is symmetric or not at first.
In the molecular structure of 3-chlorocyclopentene, chlorine is attached to the third position of the cyclopentene ring. There are four hydrogen atoms attached to the cyclopentene ring, and out of these four hydrogen atoms, three hydrogen atoms have different environments, so there are three chemically non-equivalent hydrogens in its structure.
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How many grams of KCiO3 are needed to make 186.2mol of KCi
Answer:
64.2 L
Explanation:
In order to be able to calculate the volume of oxygen gas produced by this reaction, you need to know the conditions for pressure and temperature.
Since no mention of those conditions was made, I'll assume that the reaction takes place at STP, Standard Temperature, and Pressure.
Under these conditions for pressure and temperature, one mole of any ideal gas occupies 22.7 L
- this is known as the molar volume of a gas at STP.
So, in order to find the volume of oxygen gas at STP, you need to know how many moles of oxygen are produced by this reaction.
The balanced chemical equation for this decomposition reaction looks like this:
2KClO3(s] −−−→2KCl(s]+3O2(g]↑
Notice that you have a 2/3 mole ratio between potassium chlorate and oxygen gas. This tells you that the reaction will always produce 3/2 times more moles of oxygen gas than the number of moles of potassium chlorate that underwent decomposition.
Use potassium chlorate's molar mass to determine how many moles you have in that 231-g sample.
231g ⋅ 1 mole KClO3/ 122.55g = 1.885 moles KClO3
Use the aforementioned mole ratio to determine how many moles of oxygen would be produced from this many moles of potassium chlorate
1.885 moles KClO3 ⋅ 3 moles O2/2 moles KClO3 = 2.8275 moles O2
So, what volume would this many moles occupy at STP?
2.8275 moles ⋅ 22.7 L/ 1mol = 64.2 L
This was alotta info but i hope it helped
Answer the following questions about the proton. Location in atom In the nucleus Charge elementary charge Approximate Mass 1.0073 amu Evaluate At least one answer is incorrect
The location in atom : In the nucleus
The Charge : + 1 elementary charge
The Approximate Mass = 1.0073 amu
The nucleus of an atom contains the protons, electrons and the neutrons. The Protons are the positively charged species, the electrons are negatively charged species and the neutrons have no charge means it is neutral. For the neutral atom the number of the protons is equals to the number of the electrons. The approximate mass of the proton is 1.0073 amu.
Thus, The Protons location is inside nucleus of an atom , the proton has the elementary charge of + 1. The approx mass is the 1.0073 amu.
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When converting between metric units, use the prefixes to help you determine the magnitude of a value. The prefix k indicates kilo, 1000g = 1kg.
A 25.0 kg iron weightlifting plate has a volume of 3180 cm^3 . What is the density of the iron plate in g/cm^3?
Express your answer in grams per cubic centimeter to three significant figures.
The density of the iron plate in g/cm³, given that it has a mass of 25.0 Kg and a volume of 3180 cm³ is 7.86 g/cm³
How do I determine the density of the iron plate?The density of a material is defined as the mass of the material per unit volume of the material. This is written as:
Density = mass / volume
Using the above formula, we can obtain the density of the iron plate as illustrated below:
Mass of iron plate = 25 Kg = 25 × 1000 = 25000 gVolume of iron plate = 3180 cm³Density of iron plate = ?Density = mass / volume
Density of iron plate = 25000 / 3180
Density of iron plate = 7.86 g/cm³
Thus, from the above calculation, we can conclude that the density of the iron plate is 7.86 g/cm³
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How many carbon atoms are in the following compound: Barium Carbonate?
The chemical compound Barium Carbonate (BaCO3) is composed of one Barium atom (Ba), one Carbon atom (C) and three Oxygen atoms (O3). Therefore, the number of carbon atoms in Barium Carbonate is 1.
The compound Barium Carbonate has 1 carbon atom.
The chemical formula for Barium Carbonate is BaCO3, which means it contains 1 atom of Barium (Ba), 1 atom of Carbon (C), and 3 atoms of Oxygen (O). Therefore, the compound Barium Carbonate has 1 carbon atom.
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Briefly explain why ethanol (C2H6O), an alcohol has a much higher boiling point than dimethyl ether (C2H60).
Ethanol (C2H6O), an alcohol has a much higher boiling point than dimethyl ether (C2H60) because hydrogen bonds found in the former are typically much stronger attractions than ordinary dipole moments in the latter.
What is Boiling point?
This is referred to as the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.
Ethanol (C2H6O), an alcohol has a much higher boiling point than dimethyl ether (C2H60) because hydrogen bonds have a stronger attraction which makes it more difficult for the atoms to be broken down hence the reason why the boiling point will be higher in this scenario.
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two different ionic compounds each contain only copper and chlorine. both compounds are powders, one white and one brown. an elemental analysis is performed on each powder. which of the following questions about the compounds is most likely to be answered by the results of the analysis?
The question about compounds that is most likely to be answered by the analysis is a) what is the formula unit of each compound?
The elemental analysis of two different ionic compounds, both of which contain only copper and chlorine, can be used to determine the formula unit of each compound.
An ionic compound is a type of chemical bond formed by the attraction between ions with opposite charges. In this case, the two different ionic compounds, which are powders, one white and one brown, contain only copper and chlorine ions.
The elemental analysis will help to determine the ratio between the copper and chlorine ions in the compound, which in turn will give the formula unit for each compound.
By conducting an elemental analysis on the two powders, one can answer the question of what the formula unit of each compound is. Hence, option a is correct.
This is because an elemental analysis can determine the elements present in a given compound, as well as the ratio between them. Knowing the elements present in a compound and their ratio allows us to determine the formula unit of the compound.
Although a part of your question is missing, you might be referring to this question:
Two different ionic compounds each contain only copper and chlorine. both compounds are powders, one white and one brown. An elemental analysis is performed on each powder. Which of the following questions about the compounds is most likely to be answered by the results of the analysis?
a) what is the formula unit of each compound?
b) what is the molecular mass of each compound?
c) What is ratio or each compound?
d) none of the above
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a student places a drop of food coloring into two water samples. her observations are shown in the table. which statement best explains the observations in the table? (1 point)
The statement that best explains the observations in the table is - the water molecules of sample 1 are moving faster.
The temperature has an influence on the molecules of water. An increase in temperature is can make the water molecules to have more energy and therefore move at a faster rate.
When this happens the water molecules are said to move far apart and there will be an increase in the volume of water.
When water is heated, it has the tendency to expand and increase in volume, thereby becoming less dense.
The food coloring will spread into the water molecules by the phenomenon of diffusion. In hot water, food coloring will diffuse faster.
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which properties of a material are affected by a bonding type
[tex]\huge\underline{\red{A}\green{n}\blue{s}\purple{w}\pink{e}\orange{r} -»}[/tex]
Hardness, melting and boiling points, solubility, and conductivity.Explanation:
Hope it helps you~6b. Identify the quantum numbers for the very last electron in Cadmium (Cd).
n=
1=
mi =
ms=
The quantum numbers for the very last electron in Cadmium (Cd) atom is (5, 0, 0, ±¹/₂) for the four quantum numbers.
What are quantum numbers?Quantum numbers are the set of numbers used to express the location and energy of an electron in an atom.
There are four quantum numbers used to describe the location and energy of an electron in an atom, and they are:
Principal quantum number, nazimuthal quantum number, lmagnetic quantum number, mi andspin quantum numbers, msThe electronic configuration of cadmium is [Kr]4d¹⁰5s².
Hence, cadmium belongs to period 5 of the periodic table, and the last electron occupies the 5s orbital.
The l value of the s orbital is 0, and mi is 0 as well.
The value of ms is ±¹/₂.
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