How many molecules are there in 1 millimol `NH_(3)` gas ?

500mL of NH_(3) contains 6.02xx10^(23) molecules at STP. How many molecules are present in 100 mL of CO_(2) at STP?

How many molecules are present in 2.24 ml of a gas at STP ?

How many O_(2) molecules are there in one mole of oxygen gas?

500 mL of NH_(3) contain 6.00xx10^(23) molecules at a certain temperature and pressure. How many molecules are present in 100 mL of CO_(2) at same temperature and pressure?

How many electrons are present in 1 millimole of methane?

How many electrons are present in 1 millimole of methane?

How many molecules are present in 3 moles of ethane?

How many molecules are present in 1g of hydrogen gas?