SSC MTS EXAM

Detailed explanation-1: -Answer and Explanation: The numbers are called coefficients. shows a balanced equation where two molecules of hydrogen react with one molecule of oxygen to form two molecules of water. The numbers written in front of hydrogen and water in the above equation are coefficients.

Detailed explanation-2: -Coefficients and Subscripts There are subscripts, which are part of the chemical formulas of the reactants and products; and there are coefficients that are placed in front of the formulas to indicate how many molecules of that substance is used or produced.

Detailed explanation-3: -A coefficient is a number placed in front of a chemical formula to indicate the number of atoms or molecules involved in a chemical reaction. Chemical equations should always be balanced; that is a chemical equation should have the same number of atoms on both the reactant and product side of the equation.