7. Calculate the molar mass of each of the following compounds. a. Fe,O,, iron(III) oxide b. BCl, boron trichloride c. CoHgO6, ascorbic acid (vitamin C) 8. Calculate the molar masses (in grams per mole) of each of the following. a. cane sugar, C12H2½0¡1 b. laughing gas, N¿O c. vitamin A, C20H300 9. Calculate the molar mass of each these compounds and the mass percentage of each element. a. PbS, lead(II) sulfide, galena b. C,H6, ethane, a hydrocarbon fuel c. CH;COOH, acetic acid, an important ingredient in vinegar d. NH¼NO3, ammonium nitrate, a fertilizer

7. Calculate the molar mass of each of the following compounds. a. Fe,O,, iron(III) oxide b. BCl, boron trichloride c. CoHgO6, ascorbic acid (vitamin C) 8. Calculate the molar masses (in grams per mole) of each of the following. a. cane sugar, C12H2½0¡1 b. laughing gas, N¿O c. vitamin A, C20H300 9. Calculate the molar mass of each these compounds and the mass percentage of each element. a. PbS, lead(II) sulfide, galena b. C,H6, ethane, a hydrocarbon fuel c. CH;COOH, acetic acid, an important ingredient in vinegar d. NH¼NO3, ammonium nitrate, a fertilizer

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

Page <
2
of 2
ZOOM
+
7. Calculate the molar mass of each of the following compounds.
a. Fe,O3, iron(III) oxide
b. BC13, boron trichloride
c. C,H§O6, ascorbic acid (vitamin C)
8. Calculate the molar masses (in grams per mole) of each of the following.
cane sugar, C12H22011
b. laughing gas, N2O
c. vitamin A, C20H300
а.
9. Calculate the molar mass of each these compounds and the mass percentage of each
element.
a. PbS, lead(II) sulfide, galena
b. C,H6, ethane, a hydrocarbon fuel
c. CH3COOH, acetic acid, an important ingredient in vinegar
d. NH,NO3, ammonium nitrate, a fertilizer
10. When an automobile air bag deploys, solid sodium azide decomposes rapidly to produce
nitrogen gas, and this gas inflates the bag. What is the molar mass of sodium azide (NaN3)?

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