The following problem can be solved by the concept of molar mass. Concept introduction: The molar mass is defined as the mass of a chemical substance (element or compound) divided by amount of the substance. It is expressed in kg/mol (SI units). The molar mass of a chemical compound is the sum of standard atomic masses of all the atoms present in the compound, which is then multiplied by the molar mass constant (1 g/ mol). Given: In this question, it is given that one Tums tablet has 500 mg of calcium carbonate which helps to neutralizethe stomach acid. We need to find out the (a) formula of calcium carbonate (b) molar mass of calcium carbonate, (c) number of moles of calcium carbonate present in one roll (12 tablets) of Tums, and (d) amount of calcium in two Tums tablets, (e) the Tums tablets needed daily to supply the requisite calcium when the recommended amount of Ca 2+ in older women is 1500 mg.

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Chapter 8, Problem 14CI

Interpretation Introduction

Interpretation: The following problem can be solved by the concept of molar mass.

Concept introduction: The molar mass is defined as the mass of a chemical substance (element or compound) divided by amount of the substance. It is expressed in kg/mol (SI units). The molar mass of a chemical compound is the sum of standard atomic masses of all the atoms present in the compound, which is then multiplied by the molar mass constant (1 g/ mol).

Given: In this question, it is given that one Tums tablet has 500 mg of calcium carbonate which helps to neutralizethe stomach acid. We need to find out the (a) formula of calcium carbonate (b) molar mass of calcium carbonate, (c) number of moles of calcium carbonate present in one roll (12 tablets) of Tums, and (d) amount of calcium in two Tums tablets, (e) the Tums tablets needed daily to supply the requisite calcium when the recommended amount of Ca²⁺ in older women is 1500 mg.

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