Calculate the number of moles of of 0.72 gram of `CO_2`

Calculate the number of molecules present in 11 g of CO_2 .

Calculate the number of moles of iron in a sample containing '1.0 xx 10^(22)' atoms.

The molecular mass of methane (CH_4) is 16: Calculate the number of mole molecules in 160g of CH_4 ?

"One mole of all substances contain the same number of specified particles." Calculate the number of moles of a gas in 11.2L at STP

Vitamin C is known to contain 1.29xx10^24 hydrogen atoms. Calculate the number of moles of hydrogen atoms.

Calculate the number of molecules present in 56mL of CO_2 at STP.

Calculate the number of moles of O_2 required to produce 240 g of Mgo by burning magnesium metal

Calculate the number of moles of 11.2L chlorine at STP. Find its mass.

Calculate the number of moles of O_2 required to produce 240 g of MgO by burning Mg metal. (Atomic mass: Mg = 24, O = 16).