Question

four gases were combined in a gas cylinder with these partial pressures: 3.5 atm n2, 2.8 atm o2, 0.25 atm ar, and 0.15 atm he. what is the total pressure inside the cylinder? \boxed{} atm done \\( p_t = p_1 + p_2 + p_3 + \dots + p_n \\) \\( \frac{p_a}{p_t} = \frac{n_a}{n_t} \\)

Explanation:

Step1: Recall Dalton's Law formula

$$P_T = P_1 + P_2 + P_3 + P_4$$

Step2: Substitute partial pressures

$$P_T = 3.5\ \text{atm} + 2.8\ \text{atm} + 0.25\ \text{atm} + 0.15\ \text{atm}$$

Step3: Calculate total pressure

$$P_T = 6.7\ \text{atm}$$

Answer:

6.7 atm