I have the answer but i dont get how to sove it, can someone solve it…

I have the answer but i dont get how to sove it, can someone
solve it step by step please

35. A 4.91 L cylinder has been filled with 25.0 grams of argon gas, 1.97 moles of neon gas, and 0.723 moles of xenon gas. What is the pressure inside the cylinder when it is at 32.1°C? (a) 13.7 atm (b) 21.9 atm (c) 85.7 atm (d) 18.3 atm (e) 16.7 atm 36. A solid sample of calcium carbonate is dissolved with hydrochloric acid (see unbalanced reaction below). The carbon dioxide produced from the reaction is all collected in a 2.50 L cylinder, at 25.0°C. If the reaction is performed with 23.07 g of CaCO3 and 175 mL or 2.40 M HCI, what will be the pressure of the CO2 in the cylinder? CaCO3(s) HCl(aq) Cacl2(aq) H20 CO2 (g) (a) 4.62 atm (b) 2.06 atm (c) 2.25 atm (d) 0.388 atm (e) 1.00 atm