Imagine that all microorganism suddenly disappeared from earth from what u have learned why do u think that animals would eventually disappeared from earth? Why would plant disappeared
Answer:
bugging milftoon comic milftoon comic milftoon cimicd how many to summon a transgender milftoon cimicd how
II. The student then takes a 1.00 M stock
solution of table sugar
(sucrose, C12H22011) and mixes 0.305 L
of stock solution with additional
distilled water to create a dilute
solution with a total volume of 1.25 L.
• Explain how the student can
determine the molarity of the
resulting solution. Show a valid
calculation for the final molarity.
Answer:
0.244 M.
Explanation:
From the question given above, the following data were obtained:
Molarity of stock solution (M₁) = 1 M
Volume of stock solution (V₁) = 0.305 L
Volume of diluted solution (V₂) = 1.25 L
Molarity of diluted solution (M₂) =?
The molarity of the diluted solution can be obtained by using the dilution formula as illustrated below:
M₁V₁ = M₂V₂
1 × 0.305 = M₂ × 1.25
0.305 = M₂ × 1.25
Divide both side by 1.25
M₂ = 0.305 / 1.25
M₂ = 0.244 M
Thus, the molarity of the diluted solution is 0.244 M
Steven placed an ice cream scoop under hot water before scooping ice cream. Which describes how the ice cream scoop was affected
Answer: Okay so i don't know how i can explain this but.. OK so Steven placed an ice cream scoop right? and put it under hot water so i would say it would make the ice cream scoop hot? and then using it to scoop the ice cream i could say it would be a melting affection i think
Explanation:
im am so sorry pls forgive me is i am wrong i tried my best so at least give me a like for effort.. i hope u have a great day :)
Question 3 of 20 :
Select the best answer for the question.
3. The atomic number of niobium (Nb) is 41. What's the electron configuration for Nb?
O A. [Ar] 3s 4p?
O B. [Kr] 5s? 5p
O C. [Kr] 4d45s
O D. (Ne) 4d
Answer:
[Kr] 4d4 5s1
Explanation:
Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. The chemical symbol for Niobium is Nb. Neutron Number and Mass Number of Niobium Mass numbers of typical isotopes of Niobium are 93.
Name of Element : Niobium
Atomic Weight : 92.9
Atomic Number : 41
Group : Transition Elements
Electron Configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d3
What function is most affected if the sepal of a flower is damaged by air pollution?
Answer:answer in explanation try to understand dear
Explanation:Air pollutants have a negative impact on plant growth, primarily through interfering with resource accumulation. Once leaves are in close contact with the atmosphere, many air pollutants, such as O3 and NOx, affect the metabolic function of the leaves and interfere with net carbon fixation by the plant canopy.
Is vinegar acidic, alkaline or neutral?
Answer:
Substances over 7 are categorized as basic, with 7 being the neutral point. Water has a pH level of 7. Substances with pH levels under 7 are categorized as acidic. Vinegar is acidic.
Explanation:
You can change it a little if you want. Hope this helps!
Vinegar is acidic. The only vinegar that has alkaline is apple cider vinegar, but all types of vinegar are acidic.
A perfect cube of aluminium metal was found to weigh 20.00g ,the density of the aluminium is 2.70g/ml ,what are the dimensions of the cube
Answer:
1.95cm x 1.95cm x 1.95cm
Explanation:
20.00g / 2.70g/mL = 7.41 mL = 7.41 cm^3
∛7.41 = 1.95cm
how many electrons are in a titanium atom
Answer:
2, 8, 10, 2
Explanation:
Answer:
2, 8, 10, 2
Explanation: Titanium/Electrons per shell
What sort of fossils would be expected to be found in Antarctica from more recent times, after it had moved much closer to the South Pole?
Answer:
Antarctic Peninsula, is one of the most important fossil sites on Earth.
hope this helps you ☺️☺️
Fossils that would be expected to be found in Antarctica from more recent times, after it had moved much closer to the South Pole is Antartica peninsula.
What are fossils?Fossils are the preserved remains, impression, or trace of any once-living thing from many years ago. Examples of the fossils include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants.
There are four different types of fossils-
Mold fossils
Cast fossils
Trace fossils or Ichnofossils
True form fossils
Imprints, tracks, and trails can also become fossilized and are called Trace fossils. Dinosaur footprints or worm burrows are the examples.
Living things when get decomposed from the so many years ago and become dirt and rocks are fossils.
Therefore, Fossils that would be expected to be found in Antarctica from more recent times, after it had moved much closer to the South Pole is Antartica peninsula.
Learn more about Fossils, here:
https://brainly.com/question/14988327
#SPJ3
Describe the De Borglie's hypothesis
Answer:
The De Broglie hypothesis proposes that all matter exhibits wave-like properties and relates the observed wavelength of matter to its momentum. After Albert Einstein's photon theory became accepted, the question became whether this was true only for light or whether material objects also exhibited wave-like behavior.
What is said to have occurred when an object experiences a frequency equal to its natural frequency?
frequency
diffraction
resonance
amplitude
Answer: Resonance
Explanation:
A resonance is said to occur when an object experiences a frequency that is equal to its natural frequency.
A resonance refers to the sound that's produced by an object when the object vibrates at an identical rate as the sound waves that is coming from another object.
Therefore, the correct option is C
Explain how to identify a conjugate acid and a conjugate base in an acid base reaction.
Answer:
- Identify the acid and base in the reaction.
- What is left of the base after the reaction is known as the conjugate acid, while what is left of the acid after the reaction is known as the conjugate base.
Explanation:
Types of acids and bases:
When we are looking at conjugate acid and base, the type of acid and base we should focus on are Brønstead acid and base.
Brønsted acid: proton donor
Brønsted base: proton acceptor
Do note that proton here refers to hydrogen ion, H⁺.
Other types of acids and bases includes arrhenius acid/base and Lewis acid/base.
Definition:
Conjugate acid is what remains of the acid when a Brønsted acid donates a proton, while conjugate base is the newly formed protonated species when a Brønsted base accepts a proton.
Example:
Let's look at an example of a Brønsted acid-base reaction:
NH₃(aq) +H₂O(l) ⇌ NH₄⁺(aq) +OH⁻(aq)
Here, the base is NH₃ and the acid is H₂O.
NH₄⁺ is the conjugate acid, while OH⁻ is the conjugate base.
Note:
For a Brønsted acid- base reaction, whether a substance behaves as an acid or a base depends on what it is reacting with. Although H₂O behaves as an acid in this example, it behaves as a base when reacting with HCl.
The state of matter of a substance is a physical property. A. True B. False
Answer:
I THINK IT IS TRUE BECAUSE THEY ERE FIRST FOUND TO DEMOCRITUS ARISTOTLE AND PLATO THE ROMANS AND GREEK CHEMISTS .
Explanation:
A ______ is a hole where the steam looks a lot like a smoke
A DRY ICE is hole were the steam looks a lot a smoke
Magnesium metal reacts with hydrochloric acid to produce hydrogen gas and a solution of magnesium chloride. Write and balance the chemical equation for this reaction, and determine the volume of the hydrogen gas generated (at 1.00 atm, 25 °C) by reacting 10.0 g Mg with an excess of hydrochloric acid
Answer:
Mg + 2 HCl ⇒ MgCl₂ + H₂
10.1 L
Explanation:
Step 1: Write the balanced equation
Mg + 2 HCl ⇒ MgCl₂ + H₂
Step 2: Calculate the moles corresponding to 10.0 g of Mg
The molar mass of Mg is 24.31 g/mol.
10.0 g × 1 mol/24.31 g = 0.411 mol
Step 3: Calculate the moles of H₂ produced from 0.411 moles of Mg
The molar ratio of Mg to H₂ is 1:1. The moles of H₂ produced are 1/1 × 0.411 mol = 0.411 mol
Step 4: Calculate the volume occupied by 0.411 moles of H₂
0.411 moles of H₂ are at 1.00 atm and 25 °C (298 K). We can calculate the volume occupied using the ideal gas equation.
P × V = n × R × T
V = n × R × T / P
V = 0.411 mol × (0.0821 atm.L/mol.K) × 298 K / 1.00 atm = 10.1 L
The forces between ________ are examples of electric forces.
A.
charged particles
B.
neutrons
C.
masses
D.
photons
Answer:
The answer would be charged particles.
Explanation:
Electric force exists as one of the most fundamental forces in the universe, it occurs between all charged particles.
What are alleles? Are theys ame or different
Answer:
Kind of like DNA or a part of DNA
Explanation:
They are what make you a person, no they aren't the same
For each of the salts below, match the salts that can be compared directly, using Ksp values, to estimate solubilities.
a. Mg(OH)2
b. CaSO3
c. BaCrO4
d. CaS
1. copper (II) sulfide
2. zinc hydroxide
Answer:
1 - Salts required that can be compared directly, using Ksp values, to estimate solubilities for copper (II) sulfide are - [tex]CaSO_3[/tex] (Option b) ,[tex]BaCrO_4[/tex] (Option c) and [tex]CaS[/tex] (Option d)
2 - Salts that can be compared directly, using Ksp values, to estimate solubilities for zinc hydroxide are - [tex]Mg(OH)_2[/tex] (Option a)
Explanation:
[tex]K_s_p[/tex] values can be used to compare the solubility of salts that produce ions in a 1:1 ratio.
[tex]CuS[/tex] {copper (II)sulfide} dissociates with ions in ratio 1:1 .Because the salts [tex]CaSO_3[/tex] , [tex]BaCrO_4[/tex] and [tex]CaS[/tex] have a 1:1 ion ratio, the solubilities of options b, c, and d can be compared to salt 1.
[tex]K_s_p[/tex] Values can be used to compare the solubility of salts that produce ions in a 1:2 or 2:1 ratio.
2. [tex]Zn(OH)_2[/tex] dissociates into ions in ratio 1:2 .
Because the ions in the salt [tex]Mg(OH)_2[/tex] are in a 1:2 ratio, the solubility of salt 2 can be compared to that of salt 'a'.
Hence , Salt 1 is matched with options b , c , d.
Salt 2 is matched with option a.
find the pH of
2.1 x 10-3 [HCI]
Answer: pH = 2.68
Explanation: pH = - log[H3O^+] .
HCl reacts with water : HCl + H2O -> Cl^- + H3O^+
So [H3O^+] = c(HCl) = 0.0021 M
pH = - log(0.0021) = 2.68
Which shows a triglyceride?
Answer:
A
Explanation:
A triglyceride (TG, triacylglycerol, TAG, or triacylglyceride) is an ester derived from glycerol and three fatty acids (from tri- and glyceride). Triglycerides are the main constituents of body fat in humans and other vertebrates, as well as vegetable fat.
The structure of option A shows a triglyceride.
What is triglyceride?Triglycerides are a kind of fat present in the blood. Triglycerides are the types of stored fats, which are not in use currently.
The structure of triglyceride is TRI esters containing glycerol bound to three fatty acid molecules.
Thus, the correct option is A.
Learn more about triglyceride
https://brainly.com/question/13840067
#SPJ2
When elements chemically combine with each other, what do they Form? A. electrons, B. compounds, C. atoms
Answer:
B
Explanation:
When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).
MARK AS BRAINLEST!!
What are the reactants and products of a redox reaction, neutralization reactions, and precipitation reactions?
Answer:
Precipitation reactions are ones in which at least one of the reactants is in the aqueous phase (i.e., dissolved in water), and a solid forms on the product side which was not present on the reactant side. If all the reactants are solid, then a solid product forming should not be called a precipitate. To be called a precipitate, an insoluble product must form from within solution, either from a solid and solute interacting, or from an interaction strictly between solutes.
Explanation:
Balance the equation.
Fe + Cl2 → FeCl3
A. Fe + 3Cl2 + 2FeCl3
B. Fe + 3Cl2 → FeCl3
C. 2Fe + 3Cl2 + 2FeCl3
Answer:
C. 2Fe + 3Cl2 + 2FeCl3
Explanation:
Hello there!
In this case, according to the given chemical reaction:
Fe + Cl2 → FeCl3
It turns out possible to balance it via cross-multiplying the chlorine atoms as they do not result from a whole number multiplication; it means we get:
Fe + 3Cl2 → 2FeCl3
And we just balance Fe by placing a 2 on Fe:
2Fe + 3Cl2 → 2FeCl3
Thus, the answer is C. 2Fe + 3Cl2 + 2FeCl3
Regards!
When KCl(s) is dissolved in water, the resulting solution is classified as a
O heterogeneous compound
O homogeneous compound
O heterogeneous mixture
O homogeneous mixture
Answer:
O homogeneous mixture
Explanation:
When Kci is dissolved in water it becomes a solute in O homogeneous mixture
This equation is not balanced. Click on the coefficient we should change first.
help ASAP
Answer: The coefficient we should change first is for [tex]NO_{3}[/tex].
Explanation:
The given reaction equation is as follows.
[tex]Al + Ni(NO_{3})_{2} \rightarrow Al(NO_{3})_{3} + Ni[/tex]
Here, number of atoms present on reactant side are as follows.
Al = 1Ni = 1[tex]NO_{3}[/tex] = 2Number of atoms present on the product side are as follows.
Al = 1Ni = 1[tex]NO_{3}[/tex] = 3To balance this equation, multiply Al by 2 and [tex]NO_{3}[/tex] by 3 on reactant side. Also, multiply [tex]Al(NO_{3})_{3}[/tex] by 2 and Ni by 3 on the product side.
Hence, the equation can be rewritten as follows.
[tex]2Al + 3Ni(NO_{3})_{2} \rightarrow 2Al(NO_{3})_{3} + 3Ni[/tex]
Now, number of atoms present on reactant side are as follows.
Al = 2Ni = 3[tex]NO_{3}[/tex] = 6Number of atoms present on product side are as follows.
Al = 2Ni = 3[tex]NO_{3}[/tex] = 6Since, the atoms on both reactant and product side are same. Hence, it is now a balanced chemical equation.
Thus, we can conclude that the coefficient we should change first is for [tex]NO_{3}[/tex].
what is carboxylic acid
Carboxylic acids.
Answer:
Carboxylic acid is an organic acid containing a carboxyl group. The simplest examples are methanoic (or formic) acid and ethanoic (or acetic) acid. It is used in the production of polymers, biopolymers, coatings, adhesives, and pharmaceutical drugs. They also can be used as solvents, food additives, antimicrobials, and flavorings.
Explanation:
Hope that helps.
How many grams are in 2.0 x 10-5 moles of uranium?
Which of the following would be a correct conversion factor
relating carbon dioxide (CO2) and glucose (C6H1206) using the
balanced equation below?
6CO2 + 6H20C6H12O6 + 602
Answer:6CO2/1C6H12O6
Explanation:
Why do scientists track virus mutations and how might tracking these variants be helpful in preventing and treating the virus?
Answer: they do this because if they do they can easily find new viruses to stay safe from
Explanation: i took test on it recentley
3. How many grams of aluminum can be heated from 90°C to 120°C if 500 J of heat energy are applied?
(c = 0.900 J/g °C)
We are given:
Initial Temperature = 90°c
Final Temperature = 120°c
Heat applied(ΔH) = 500 Joules
Specific heat(c) = 0.9 Joules / g°C
Mass of Aluminium(m) = ?
Change in temperature:
ΔT = Final temp. - Inital Temp.
ΔT = 120 - 90
ΔT = 30°c
Calculating the mass:
We know the formula:
ΔH = mcΔT
replacing the values:
500 = m(0.9)(30)
500 = m(27)
m = 500/27
m = 18.52 grams