# Question #cb2ea

##### 1 Answer

#### Explanation:

Notice that no mention of *volume* and *number of moles* was made, which means that you can assume that they **remain constant**.

When volume and number of moles are kept constant, pressure and temperature have a **direct relationship** - this is known as Gay Lussac's Law.

Simply put, if temperature *increases*, pressure will **increase** as well. Likewise, if temperature *decreases*, pressure will **decreases** as well.

Mathematically, this is written as

#color(blue)(P_1/T_1 = P_2/T_2)" "# , where

Now, the temperature of the gas *increases* from **increases** as well.

Plug in your values and solve for

#P_2 = T_2/T_1 * P_1#

#P_2 = (450color(red)(cancel(color(black)("K"))))/(320color(red)(cancel(color(black)("K")))) * "1.5 atm" = color(green)("2.1 atm")#