Suriin ang IDNStudy.com para sa mabilis at maaasahang mga solusyon. Ang aming platform ay nagbibigay ng mga maaasahang sagot upang matulungan kang gumawa ng matalinong desisyon nang mabilis at madali.

A sample of He gas kept in an inflated balloon with a volume of 1.50 L and at a temperature of 27.0 °C exerts a pressure of 4.50 atm. What is the number of moles of He gas present

Sagot :

Given:

[tex]V = \text{1.50 L}[/tex]

[tex]P = \text{4.50 atm}[/tex]

[tex]T = \text{27.0°C + 273.15 = 300.15 K}[/tex]

Unknown:

[tex]n[/tex]

Solution:

[tex]PV = nRT[/tex]

[tex]n = \frac{PV}{RT}[/tex]

[tex]n = \frac{\text{(4.50 atm)(1.50 L)}}{(0.082057 \: \frac{\text{L • atm}}{\text{mol • K}})(\text{300.15 K})}[/tex]

[tex]\boxed{n = \text{0.274 mol}}[/tex]

#CarryOnLearning