Question

a gas has a volume of 55mL and a pressure of 130 atm. what is the pressure of the gas if the volume changes to 100ml?

Answer 1

Answer:

71.5 atm

Explanation:

Use Boyle's Law and rearrange formula.

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Answer 2

Answer:

$\large \boxed{\text{71.5 atm}}$

Explanation:

The only variables are the pressure and the volume, so we can use Boyle's Law.

Data:

p₁ = 130 atm; V₁ =   55 mL

p₂ = ?;            V₂ = 100 mL

Calculation:

$\begin{array}{rcl}p_{1}V_{1} & = & p_{2}V_{2}\\\text{130 atm} \times \text{55 mL} & = & p_{2} \times\text{100 mL}\\\text{7150 atm} & = & 100p_{2}\\p_{2} & = & \dfrac{\text{7150 atm}}{100}\\\\& = &\textbf{71.5 atm}\\\end{array}\\\text{The new pressure of the gas is \large \boxed{\textbf{71.5 atm}} }$