Answer:
25.8 lb/in²
Explanation:
Gay-Lussac's law tells us that given an ideal gas of a certain mass has a constant volume, the pressure exerted on the sides of its container is directly proportional to its absolute temperature.

66 g of element Y is needed since the ratio between element X and element Y is 1:2
I believe the answer is purple
I beleive the answer is b, charge