Question

A little help with all of them hehe​

Answer 1

1. 280 torr
2. 2.53 L
3. 192884.8 Pa
4. 11.46 moles

Step-by-step explanation:

Q1

According to The Ideal Gas Equation :

• P₁V₁/T₁ = P₂V₂/T₂
• P₁V₁ = P₂V₂ (as T₁ = T₂)
• P₂ = P₁V₁/V₂
• P₂ = 560 x 145 / 290
• P₂ = 560 x 0.5
• P₂ = 280 torr

Q2

• P₁V₁/T₁ = P₂V₂/T₂
• V₁/T₁ = V₂/T₂
• V₂ = V₁T₂/T₁
• V₂ = 3 x (273 - 20) / (273 + 27)
• V₂ = 3 x 253 / 300
• V₂ = 253 x 0.01
• V₂ = 2.53 L

Q3

• PV = nRT
• P = nRT/V
• P = 0.4 x 8.314 x (17 + 273) / 5 x 10⁻³
• P = 0.4 x 8.314 x 290 x 10³ / 5
• P = 400 x 8.314 x 58
• P = 23200 x 8.314
• P = 192884.8 Pa

Q4

• PV = nRT
• n = PV/RT
• n = 2.8 x 98 / 0.082 x 292
• n = 274.4/23.944
• n = 11.46 moles