Answer all questions please

9. What is the density (in g/L) of butane (C4H10) at 99,991 Pa and 25.0 C ?

8. A 289 mg sample of gas occupies 157.0 mL at 18.0 C. Calculate the molar mass of the gas if its presure is 727 mm ?

7. How many moles of propane are contained in a 3,458.6 mL tank at 10,852.6 torr and 20.3 c ?

6. What pressure is exerted by a 5.5 g of hydrogen gas molecules that occupies a 5,758.3 mL container at 6.2 C ?

5. At 61.4 atm pressure and 7.4 c , a gas occupies a volume of 7,639.9 mL. How many liters will it occupy at 6 C and 4.2 atm ?

4. a gas initially at 3.2 atm and 11,657.8 mL is compressed to 6.6 L. What is the new pressure of the gas ?

3. Determine the pressure(in atm) of the gas in the manometer if h= 440.8 mm and the atmospheric pressure is 669.3 mm

2. what is 65.0 cm pressure in kilopascals (kPa) ?

1. What is 922.9 mm in lb/in ^2 ?