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Y_Kistochka [10]
2 years ago
6

A tank (not rigid) contains 2.3L of

Chemistry
2 answers:
Jlenok [28]2 years ago
7 0

Convert

  • Temp to Kelvin
  • 25°C=298K
  • 40°C=313K

Apply Charles law

  • V1T2=V2T1
  • 2.3(313)=298V2
  • 719.9=298V2
  • V2=2.4L
yan [13]2 years ago
5 0

Answer:

See below ~

Explanation:

<u>Q1</u>

<u>Given</u> :

  • V₁ = 2.3L
  • T₁ = 25°C = 298 K
  • T₂ = 40°C = 313 K

<u>Unknown</u> :

  • V₂

<u>Formula</u> :

  • V₁/T₁ = V₂/T₂ (Charles Law)

<u>Solution</u> :

  • 2.3/298 = V₂/313
  • V₂ = 313/298 x 2.3
  • V₂ = 1.05 x 2.3
  • V₂ = 2.42 L

<u>Final Answer</u> :

  • 2.42 L

<u>Q2</u>

<u>Given</u> :

  • P₁ = 1.01 atm
  • V₁ = 6 L
  • V₂ = 3 L

<u>Unknown</u> :

  • V₂

<u>Formula</u> :

  • P₁V₁ = P₂V₂

<u>Solution</u> :

  • 1.01 x 6 = P₂ x 3
  • P₂ = 1.01 x 2
  • P₂ = 2.02 atm

<u>Final Answer</u> :

  • 2.02 atm
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To solve this, let's assume ideal gas behavior.

PV=nRT
Let's solve for n. Convert units to SI units first.

Pressure = 833 torr(101325 Pa/760 torr) = 111,057.53 Pa
Volume = 250 mL(1 L/1000 mL)(1 m³/1000 L) = 2.5×10⁻⁴ m³
Temperature = 42.4 + 273 = 315.4 K

n = (8,314 J/mol·K)(315.4 K)/(111057.53 Pa)(2.5×10⁻⁴ m³)
n = 94.45 mol

The molar mass of ammonia is 17.031 g/mol.
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