Q: The number of moles of CO₂ in 11 g of gas is:
Q: If 16 grams of O₂ react with excess C₂H₆,how many grams of CO₂ will be formed?The formula mass of O₂=32 amu and CO₂=44 amu 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O
Q: In the laboratory we learnt that one mole of any gas at standard temperature and pressure (STP) will occupy 22.4 liters .How many liters will 8 grams of O₂ gas occupy at STP .The formula mass of O₂ is equal to 32 amu.
Q: Water has a vapour pressure of 23.76 torr at 25⁰C .What is vapour pressure of sucrose solution if mole fraction of sucrose is 0.250?
Explanation: Vapour pressure of solution containing a colatile solvent and non-volatile solute is given by: Psolution =P₁⁰(1-X₂),Psolution=(23.76 torr)(1-0.250)=17.8 torr