# The sum of the coefficients in the reaction between calcium and water is …

September 25, 2021 | education

| Let’s compose the reaction equation: Ca + H2O = Ca (OH) 2 + H2

Let’s arrange the coefficients in the equation: Ca + 2H2O = Ca (OH) 2 + H2

Let’s calculate the sum of the coefficients in the equation: before H2O, the coefficient is 2, before the rest of the compounds, the coefficient is 1.

1 + 2 + 1 + 1 = 5.

Answer: the sum of the coefficients in the reaction of calcium and water is 5

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