One gram of oxygen is equal to

The activity of one gram of radium is equal to _________.

One gram - atom of oxygen is

If one grams of sulphur contains x atoms, calculate the number of atoms in one gram of oxygen element. (Atomic masses : S = 32 u , O = 16 u )

When x grams of carbon are heated with y grams of oxygen in a closed vessel, Why no solid residue is left behind?

How many grams of oxygen are required to burn completely 570g of octane?

One gram molecule of oxygen is

One mole of oxygen gas at STP is equal to ...........