two grams of hydrogen combine with 16g of oxygen to form many grams of water will be formed?write the name of law of chemical combination which u have used in calculation?

2g Hydrogen shows that 2 moles of hydrogen is present while 16g of oxygen means 1 mole of oxygen is present. When we combine 2 moles of hydrogen with 1 mole of oxygen, it will give 1 mole of water molecule.

H2 + 1/2 O2 ----------------> H2O

So, mass of water will be 18g.

In this reaction, 2 laws of chemical combinations are followed which are as follows:

Law of conservation of mass - law of conservation of mass states that mass can neither be created nor be destroyed in a chemical reaction. So in above reaction mass of hydrogen on reactant side and product side is 2g while mass of oxygen is 16g on both sides, so mass is conserved.

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