1. How many cubic centimeters of carbon dioxide gas at 3.50 atmosphere of pressure are required to inflate a balloon that is 850. cm3 at 2.50 atmospheres? 2. A balloon filled with carbon dioxide & helium has a total pressure of 564.2 kPa. It was filled with carbon dioxide at a partial pressure of 456.9 kPa. What was the partial pressure of helium gas in the balloon?

3. A sample of an unknown gas exerts a pressure of 0.940 atm in a 452 mL container at 23.0°C. Calculate the moles of the gas?

4. The pressure of 6.24 L of a gas is increased from 25.0 kPa to 55.0 kPa. What is the new volume?

5. The volume (in L) that would be occupied by 5.00 moles of O2 at STP is.

6. Given the following unbalanced equation:CH4(g) + O2(g)  CO2 (g) + H2O(g)If you had 4.00 mol of CH4, how many L of H2Owould be produced at STP?

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

idk

explanation:

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2

answer: mole of the gas

answer: mole of the gasexplanation: