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20) Write the empirical formulas for the following compound: HH C-0-C HH A) C,HO2 B) CH;0 C) C2H,0

20) Write the empirical formulas for the following compound: HH C-0-C HH A) C,HO2 B) CH;0 C) C2H,0

Chemistry
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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20) Write the empirical formulas for the following compound: HH -0- A) C,H¿O2 B) CH,0 C) CH,O 21) Write a sentence that describes how to determine the number of moles of a compound in a known mass of the compound if we know its molecular formula. A) Use the molecular formula to find the molar mass; to obtain the number of moles, divide the molar mass of the compound by the mass of compound. B) Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound. C) Use the molecular formula to find the molar mass; to obtain the number of moles, multiply the mass of compound with the molar mass of the compound. 22) Compare 1 mole of H, 1 mole of O, and 1 mole of F2. Which has the largest number of molecules? Which has the greatest mass? A) All three have the same number of molecules, since a mole is defined as a specific number of particles. B) O2 has the largest number of molecules. C) H2 has the largest number of molecules. 23) Calculate the molar mass of the following compound: hydrogen fluoride, HF A) 1.01 g/mol B) 19.00 g/mol C) 20.01 g/mol
Transcribed Image Text:20) Write the empirical formulas for the following compound: HH -0- A) C,H¿O2 B) CH,0 C) CH,O 21) Write a sentence that describes how to determine the number of moles of a compound in a known mass of the compound if we know its molecular formula. A) Use the molecular formula to find the molar mass; to obtain the number of moles, divide the molar mass of the compound by the mass of compound. B) Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound. C) Use the molecular formula to find the molar mass; to obtain the number of moles, multiply the mass of compound with the molar mass of the compound. 22) Compare 1 mole of H, 1 mole of O, and 1 mole of F2. Which has the largest number of molecules? Which has the greatest mass? A) All three have the same number of molecules, since a mole is defined as a specific number of particles. B) O2 has the largest number of molecules. C) H2 has the largest number of molecules. 23) Calculate the molar mass of the following compound: hydrogen fluoride, HF A) 1.01 g/mol B) 19.00 g/mol C) 20.01 g/mol
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