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pentagon [3]
2 years ago
12

15.0 L of an ideal gas at 298 K and 3.36 atm are heated to 383 K with a new pressure of 5.40 atm. What is the new volume in lite

rs?
Chemistry
1 answer:
klasskru [66]2 years ago
7 0

Key words:-

  • P=Pressure
  • V=Volume
  • T=Temperature

Here

  • V1=15L
  • T1=298K
  • T2=383K
  • P1=3.36atm
  • P2=5.40atm
  • V2=?

Apply combine gas law

\\ \tt\hookrightarrow \dfrac{P1V1}{T1}=\dfrac{P2V2}{T2}

\\ \tt\hookrightarrow \dfrac{3.36(15)}{298}=\dfrac{5.40V2}{383}

\\ \tt\hookrightarrow 0.169=0.014V2

\\ \tt\hookrightarrow V2=12.1L

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When a glow stick is crushed and shaken, the two liquids mix and the stick glows.
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Answer:

A chemical change has occurred, with energy being given off.

Explanation:

The liquids mix and the stick gives off energy in light form

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3 years ago
A Flame test is an example of chemistry property. What evidence can you use to back your statement up?
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3 years ago
A tank at is filled with of sulfur tetrafluoride gas and of sulfur hexafluoride gas. You can assume both gases behave as ideal g
dangina [55]

The question is incomplete, the complete question is:

A 7.00 L tank at 21.4^oC is filled with 5.43 g of sulfur hexafluoride gas and 14.2 g of sulfur tetrafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas. Round each of your answers to significant digits.

<u>Answer:</u> The mole fraction of sulfur hexafluoride is 0.221 and that of sulfur tetrafluoride is 0.779

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass.  The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

  • <u>For sulfur hexafluoride:</u>

Given mass of sulfur hexafluoride = 5.43 g

Molar mass of sulfur hexafluoride = 146.06 g/mol

Putting values in equation 1, we get:

\text{Moles of sulfur hexafluoride}=\frac{5.43g}{146.06g/mol}=0.0372mol

  • <u>For sulfur tetrafluoride:</u>

Given mass of sulfur tetrafluoride = 14.2 g

Molar mass of sulfur tetrafluoride = 108.07 g/mol

Putting values in equation 1, we get:

\text{Moles of sulfur tetrafluoride }=\frac{14.2g}{108.07g/mol}=0.1314mol

Total moles of gas in the tank = [0.0372+ 0.1314] mol = 0.1686 mol

Mole fraction is defined as the moles of a component present in the total moles of a solution. It is given by the equation:

\chi_A=\frac{n_A}{n_A+n_B} .....(2)

where n is the number of moles

Putting values in equation 2, we get:

\chi_{SF_6}=\frac{0.0372}{0.1686}=0.221

\chi_{SF_4}=\frac{0.1314}{0.1686}=0.779

Hence, the mole fraction of sulfur hexafluoride is 0.221 and that of sulfur tetrafluoride is 0.779

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3 years ago
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Mademuasel [1]

Answer:

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Step 1. Determine the cell potential

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2Cr + 3Cu²⁺ ⟶ 3Cu  + 2Cr³⁺    1.086  V

Step 2. Calculate ΔG°

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