The mass percentage of CaCO 3 in the given sample of compound should be determined. Concept introduction: For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass. Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal. The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mol (g/mol). Mass percentage of reacted mass in the original sample is the ratio of mass of substance reacted to mass of whole sample taken. Mass percent of elements of a compound is the ratio of mass of element to the mass of whole compound and multiplied with hundred.

Question

6. Choose the compound that will produce the spectrum below and assign the signals as carbonyl, aryl, or alkyl. 100 ō (ppm) 50 0 7. 200 150 Assign all of the protons on the spectrum below. 8. A B 4 E C 3 ō (ppm) 2 1 0 Choose the compound that will produce the spectrum below and assign the signals to the corresponding protons. OH 6 OH 3 2 1 0 4 ō (ppm)

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Chapter 4, Problem 27PS

Interpretation Introduction

Interpretation:

The mass percentage of CaCO3 in the given sample of compound should be determined.

Concept introduction:

For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.

Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.

The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mol (g/mol).

Mass percentage of reacted mass in the original sample is the ratio of mass of substance reacted to mass of whole sample taken.

Mass percent of elements of a compound is the ratio of mass of element to the mass of whole compound and multiplied with hundred.

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