Chemistry

Grade-9

Easy

Question

# What is the temperature when 2.10 moles of nitrogen gas and it has a pressure of 1.25 atm in a 25L of tank?

- 173K
- 252K
- 181K
- 212K

Hint:

### Use the ideal gas equation

## The correct answer is: 181K

### According to Ideal Gas Equation, PV = nRT

P = 1.25 atm, V = 25L, n = 2.10 and R = 0.082 L atm^{-1} mol^{-1}

Substituting the values,

1.25 x 25 = 2.10 x 0.082 x T

T = 31.25/0.1722

T = 181.47 K or 181 K

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