Question

6. Calculate the density of Nz at STP. 289/mol 22.44 7. The density of an unknown ideal gas at 20.0°C and 1.00 atm was found to be 1.83 g/L. What is the molar mass of the unknown? mm-d - 1.839/2 x 0437 0.00 TOO 8. Calculate the pressure exerted by 65.0 kg of Ar in a 756.0-L tank at 30.0°C. DV = nRT = P =nRT 7625 M X 0.882183030 250.ol Paki 9. A tank contains 105 g of O2 at 35°C and 860 mmHg, Calculate 12 the new volume after the removal of 30,0 g of oxygen under the BYT same conditions. Piv. Pivilz V 302 ac y n L. 2382. 860 intatt x?are PaTi 10. A 25.0-L balloon at 3.0 atm and 25°C contains 12.0 g of He wypo - 0 How many grams of He will inflate the balloon twice its initia size under the same conditions? 65.oko 10009

idk if my answers are correct pls help

Answer 1

6) STP conditions: Pressure of the N, gas, P=1.00 am Temperature, T = 0°C + 273 = 273K Molar mass of the N, gas = 28.02 g/mol Gas, constant, R = 0.0821 L. atm K-mol-1 According to ideal gas equation, , PM Density of the gas, d = (1.00 atm) (28.02 g/mol) (0.0821 L atm Kºmolº")(273 K) = 1.25 g/L