The general form of a chemical reaction is XA plus YB yields ZAB in the equation a and B or elements in the XYNZ are coefficients state the mole ratios for this reaction

The mole ratio is A:B:A+B

Explanation:when substance reacts according to John Dalton's theory,their combining ratio is often a replica of the combining moles of the reactants and that of the products. So when Amoles of X combines withB moles of Y ,they produce A+B moles of XY to get a balance reaction e.g if 1moles of X2 reacts with 1moles of Y2 to form XY

The balance equation is seen as

X2+Y22XY

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)