Final answer:
The pressure change when a constant volume of gas is heated from 20°C to 30°C is approximately 0.03 atm.
Step-by-step explanation:
According to Charles's Law, when a gas is heated at constant volume, its pressure is directly proportional to its temperature. To determine the pressure change, we can use the formula P₁/T₁ = P₂/T₂, where P₁ is the initial pressure, T₁ is the initial temperature, P₂ is the final pressure, and T₂ is the final temperature.
Given that the initial pressure is 1.00 atm, the initial temperature is 20°C (293 K), and the final temperature is 30°C (303 K), we can plug in these values into the equation to find the final pressure:
P₁/T₁ = P₂/T₂
1.00 atm/293 K = P₂/303 K
Solving for P₂, we get:
P₂ = (1.00 atm/293 K) * 303 K
P₂ ≈ 1.03 atm
Therefore, the pressure change when the constant volume of gas is heated from 20°C to 30°C is approximately 0.03 atm.