6. A sample of nitrogen gas is contained in apiston with a freely moving cylinder. At 0 C,the volume of the gas is 361 mL. To whattemperature must the gas be heated to occupya volume of 492 mL?Answer in units of C21. One method of estimating the temperature ofthe center of the sun is based on the assump-tion that the center consists of gases that havean average molar mass of 2.00 g/mol. If thedensity of the center of the sun is 1.40 g/cm3at a pressure of 1.30 × 109 atm, calculate thetemperature.Answer in units of C22. What is the molar mass of a gas if 0.358 gof the gas occupies a volume of 186 mL at5.00C and 1.10 atm?23.For the reaction2 HCl + Na2CO3 ! 2 NaCl + H2O + CO2179.2 liters of CO2 is collected at STP. Howmany moles of NaCl are also formed?1. 4.0 moles2. 8.0 moles3. 32.0 moles4. 6.0 moles5. 12.5 moles6. 16.0 moles24.The analysis of a hydrocarbon revealed thatit was 85.6281% C and 14.3719% H by mass.When 2.55 g of the gas was stored in a 2.5 Lflask at 127.276C, it exerted a pressure of454 Torr. What is the molecular formula ofthe hydrocarbon?1. C6H122. C4H83. C7H144. C2H45. C3H86. C8H167. C4H108. C4H69. C3H515.If the reactionN2(g) + 3H2(g) ! 2NH3(g)is carried out at constant temperature andpressure, how much H2 is required to reactwith 6.4 L liters of N2?1. 9.6 L2. 25.6 L3. 19.2 L4. Cannot be determined.5. 12.8 L