Question

If a helium balloon has a volume of 8.5 L assuming STP conditions, how many moles are there?

Answer 1

0.37946 moles

Step-by-step explanation

at STP, there are 22.4 liters for every mole of gas, so divide the number of liters by 22.4 to find the number of moles

number of moles =
`8.5 liters * (1 mole)/(22.4 liters)`

number of moles = 0.37946 moles