Which of the following has the greater mass: 0.72 g of O2 or 0.0011 mole of chlorophyll (C55 H7

Name: Problem 117, Chapter 3: Chemistry
Uploaded: 2020-07-18T00:52:19-08:00
Duration: 2 min 56 s
Channel: Daniel Kim
Description: Which of the following has the greater mass: 0.72 g of O2 or 0.0011 mole of chlorophyll (C55 H72 MgN4 O5) ?

step 1 For this problem, we're supposed to find, which has a higher mass, 0 .72 grams of O2, or 0 .001

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Question

Which of the following has the greater mass: $0.72 \mathrm{~g}$ of $\mathrm{O}_{2}$ or 0.0011 mole of chlorophyll $\left(\mathrm{C}_{55} \mathrm{H}_{72} \mathrm{MgN}_{4} \mathrm{O}_{5}\right) ?$

   Which of the following has the greater mass: $0.72 \mathrm{~g}$ of $\mathrm{O}_{2}$ or 0.0011 mole of chlorophyll $\left(\mathrm{C}_{55} \mathrm{H}_{72} \mathrm{MgN}_{4} \mathrm{O}_{5}\right) ?$

Chemistry

Raymond Chang, Jason… 13th Edition

Chapter 3, Problem 117

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Solved by Expert Daniel Kim

07/18/2020

Step 1

To do this, we'll add up the molar masses of all the elements in its formula: Molar mass of chlorophyll = (55 * molar mass of C) + (72 * molar mass of H) + (1 * molar mass of Mg) + (4 * molar mass of N) + (5 * molar mass of O) Using the molar masses of each Show more…

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Which of the following has the greater mass: $0.72 \mathrm{~g}$ of $\mathrm{O}_{2}$ or 0.0011 mole of chlorophyll $\left(\mathrm{C}_{55} \mathrm{H}_{72} \mathrm{MgN}_{4} \mathrm{O}_{5}\right) ?$

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Key Concepts

Molecular Mass

Molecular mass is the mass of one mole of a substance, calculated by summing the atomic masses of all the atoms present in its chemical formula. It plays a critical role in determining the relationship between the mass of a substance and the number of moles, which is essential for quantitative chemical analysis and comparisons.

Mole Concept

The mole is a fundamental unit in chemistry representing a specific number of particles, namely Avogadro's number. It serves as a bridge between the atomic scale and macroscopic quantities, allowing chemists to convert between the mass of a substance and the number of its constituent particles.

Mass-Mole Conversion

Mass-mole conversion involves using the molar mass of a substance to translate between the amount of substance in grams and the quantity in moles. This conversion is essential for comparing and calculating the quantities of various substances involved in chemical reactions.

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