How many grams of silver are in 0.263 mole of Ag?

How many grams are there in 0.008 kg?

How many atoms are there in 0.25 mole of hydrogen ?

How many moles and how many grams of HCI are present in 250 ml of 0.5 M HCl solution?

How many grams of silver could be plated out of a shield by electrolysis of a solution containing Ag^(+) ions for a period of 4 hours at a current strength of 8.5 amperes ?

How many moles and how many grams of HCl are present in 250cm^(3) of 0.5M HCl solution ?