In order to solve this question, we will be using the Gay-Lussac's gas Law, which is an experimental gas law that shows the relationship between temperature and pressure for a gas, the formula is:
P1/T1 = P2/T2
We have:
P1 = 1.00 atm
T1 = 20.0°C, but we need it Kelvin, therefore, 293 K
P2 = ?
T2 = 30°C, or 303 K
Now we add these values into the formula:
1/293 = P2/303
P2 = 1.03 atm is the new pressure
