Final answer:
The pressure increases from 1.00 atm to 1.03 atm when the gas is heated from 20.0°C to 30.0°C.
Step-by-step explanation:
The pressure change when gas at 1.00 ATM is heated from 20.0°C to 30.0°C can be determined using the ideal gas law, which states that pressure is directly proportional to temperature, assuming constant volume and amount of gas. Since the volume and amount of gas remain constant in this scenario, the pressure change can be determined using the formula:
P2 = P1 * (T2 / T1)
where P2 is the final pressure, P1 is the initial pressure, T2 is the final temperature, and T1 is the initial temperature. Plugging in the values, we have:
P2 = 1.0 atm * (303.15 K / 293.15 K) = 1.03 atm
Therefore, the pressure increases from 1.00 atm to 1.03 atm when the gas is heated from 20.0°C to 30.0°C.