How many grams of `O_2` is required for combustion of 480 grams of m Mg? Find the mass of ‘MgO’ formed in this reaction.

If the gold number of potato starch is 25, how many grams of it is required to prevent coagulating of 100mL of gold sol on adding 10mL of 10% NaCl solution?

Six grams each of magnesium and oxygen was allowed to react. Assuming that the reaction is complete, the mass of MgO formed in the reaction is

How many grams of oxygen are present in a decimol of washing soda.

How many grams of Al_2(SO_4)_3 , will be required to prepare 4 litres of 0.025M solution ?

How many moles are 28 grams of Nitrogen atoms?

How many grams of 80% pure marble stone on calcination can give 14 grams of quick lime?