How many millimoles of methane, `CH_(4)` are present in 6.4 g of this gas?

How many gram molecules of H_(2)SO_(4) , are present in 4.9 g of the acid? (b) How many atoms of hydrogen and oxygen are present in 0-15 mole of water (H_(2)O) ?

How many moles of H_(2)SO_(4) are present in 4.9g H_(2)SO_(4) ?

How many moles of H2SO4 are present in 4.9g of H2SO4?

How many moles of H, are present in 4.9 g H_(2)SO_(4) ?

How many moles of H, are present in 4.9 g H_(2)SO_(4) ?

How many no of moles of oxygen are present in 64g of oxygen molecule?

How many electrons are present in 1.6 g of methane?

How many moles of methane are required to produce 22 g of CO_(2) (g) + after combustion :- CH_(4)(g) + 2O_(2)(g) + 2H_(2)O(g)