CHEMISTRY HIGH SCHOOL

As you ___________the temperature in a reaction the molecules speed up, likewise if you ____________ the temperature the molecules slow down.

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Answer 1
Answer: The words that would correctly fill the blanks are increase and decrease, respectively. Temperature is directly related to kinetic energy which characterizes motion in molecules. Therefore, as the temperature goes up, the motion of molecules goes faster and vice versa.

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PLEASE HELPPPPP Antimony exists naturally as 2 isotopes. Antimony-121 has a mass of 120.9038 amu and an abundance of 57.30%. Determine the mass of the other isotope, antimony-123 knowing the average atomic mass of the element is 121.80 amu.

Answers

Answer: 1.6.905.x2.00=amu

Explanation:

if you multiply the atomic mass x 2.00 it will give you 1.6.905x2.00Amu your welcome

True or False: Mechanical weathering is the breakdown or rock by changing its chemical composition.​

Answers

Answer:

False

Explanation:

Mechanical weathering breaks rocks into smaller pieces without changing their composition. Ice wedging and abrasion are two important processes of mechanical weathering. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface.

Hope this helps☺️

Answer: False

Explanation:

That’s not using mechanics

Which of the following chemical reactions is an oxidation-reduction reaction? CuSO4 + BaCl2 yields BaSO4 + CuCl2 Pb(NO3)2 + 2NaCl yields PbCl2 + 2NaNO3 N2 + 3H2 yields 2NH3 K2SO4 + BaCl2 yields BaSO4 + 2KCl

Answers

Answer : The correct option is, N_2+3H_2\rightarrow 2NH_3

Explanation :

(1) CuSO_4+BaCl_2\rightarrow BaSO_4+CuCl_2

(2) Pb(NO_3)_2+2NaCl\rightarrow PbCl_2+2NaNO_3

(3) K_2SO_4+BaCl_2\rightarrow BaSO_4+2KCl

The reactions 1, 2, and 3 are the example of double-displacement reaction in which the cation and anion of the two reactants exchange their places to give two new compounds.

(4)N_2+3H_2\rightarrow 2NH_3

This reaction is an example of oxidation-reduction reaction.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases.

In this reaction the oxidation state of nitrogen and hydrogen is (0) and the oxidation state of nitrogen and hydrogen in NH_3 are, (-3) and (+1). So, from this we conclude that the nitrogen shows reduction reaction and hydrogen shows oxidation reaction.

Hence, the correct option is, N_2+3H_2\rightarrow 2NH_3
The answer is N2 + 3H2 yields 2NH3. The oxidation-reduction reaction means that there is electrons transfer during the reaction which means that the valence changed.

Which particle makes the atom an unstable isotope?

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The particle that makes the atom an unstable isotope is either excess proton or excess neutron.

What is Unstable isotopes?

Unstable isotopes are isotopes of an element that have an excess of either protons or neutrons in their atomic nucleus, making them prone to undergo radioactive decay.

Radioactive decay is the process by which an unstable atomic nucleus releases energy in the form of radiation to achieve a more stable configuration.

The specific particles that can make an atom an unstable isotope are:

Protons: If an atom has an excessive number of protons in its nucleus, it can become unstable.

Neutrons: Similarly, if an atom has an excessive number of neutrons in its nucleus, it can become unstable.

Thus, the particle that makes the atom an unstable isotope is either excess proton or excess neutron.

Learn more about unstable isotopes here: brainly.com/question/12108854

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Instability of an atoms nucleus can result from an excess of either neutrons or protons . So neutrons and protons .

Whichof the following is another name for science

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field or discipline
 hope it helped

A mixture of oxygen, hydrogen, and nitrogen exerts a total pressure of 378 kPa. If the partial pressures of oxygen and hydrogen are 212 kPa and 101 kPa respectively, what is the partial pressure exerted by nitrogen?

Answers

What's the relationship between total and partial pressure? The total pressure is the sum of the parcial pressures!


So for us, it would be:

378= 212+101+x

where x is the parcial pressure of nitrogen.

Now we count:
378= 212+101+x
378=313+x
378-313=x
65=x

So the parcial pressure exerted by nitrogen is 65!
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