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dusya [7]
3 years ago
8

Question 2(Multiple Choice Worth 3 points)

Chemistry
1 answer:
viktelen [127]3 years ago
5 0

Answer:

2.0 x 10⁻³ M/s.

Explanation:

  • The rate of the reaction is the change of the concentration of the reactants or the products with time.

<em>The rate of the reaction = - Δ[reactants]/Δt = - [(0.6 M - 1.8 M)]/(580 s - 0 s) = 2.069 x 10⁻³ M/s.</em>

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A sample of nitrogen gas is at a temperature of 50 c and a pressure of 2 atm. If the volume of the sample remains constant and t
Lilit [14]

Answer:

The new temperature of the nitrogen gas is 516.8 K or 243.8 C.

Explanation:

Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.

Gay-Lussac's law can be expressed mathematically as follows:

\frac{P}{T} =k

Where P = pressure, T = temperature, K = Constant

You want to study two different states, an initial state and a final state. You have a gas that is at a pressure P1 and at a temperature T1 at the beginning of the experiment. By varying the temperature to a new value T2, then the pressure will change to P2, and the following will be fulfilled:

\frac{P1}{T1} =\frac{P2}{T2}

In this case:

  • P1= 2 atm
  • T1= 50 C= 323 K (being 0 C= 273 K)
  • P2= 3.2 atm
  • T2= ?

Replacing:

\frac{2 atm}{323 K} =\frac{3.2 atm}{T2}

Solving:

T2*\frac{2 atm}{323 K} =3.2 atm

T2=3.2 atm*\frac{323 K}{2 atm}

T2= 516.8 K= 243.8 C

<u><em>The new temperature of the nitrogen gas is 516.8 K or 243.8 C.</em></u>

5 0
3 years ago
What is the oxidation number of sulfur in na2s2o3 ?.
julsineya [31]

Answer:

Therefore, the oxidation state of sulphur atoms in Na2S2O3 is −2 and +6.

6 0
3 years ago
Heelppppppppppjgjghjhjhj
Grace [21]

4. (1)/[1(12)+4(1)] = <u>25% </u>

I'm pretty sure this is your answer.

<h3>If you need to see this solved easier, no worries! =</h3>

4. 4 / 16 = <u>25%</u>


<em>I hope this helped! Good luck.</em>

7 0
3 years ago
13. An organic compound is found to contain 77.42% of C, 7.53% of H and
ivann1987 [24]

Answer

7.53% 97% if you divide it you can get the answer

Explanation:

8 0
3 years ago
True or false: A skeleton equation in chemistry shows the relative amounts of all materials in the reaction
Neko [114]

Answer:

false im pretty sure.

4 0
3 years ago
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