Answered: number of grams

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number of grams

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter2: Chemical Compounds

Section: Chapter Questions

Problem 80QRT

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Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

Calculate the number of grams in:

(a) 1.77 mol of nitrogen dioxide, NO2

(b) 0.84 mol of 2-propanol, C3H8O (rubbing alcohol)

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The active ingredient in Pepto-BismoÂ® (an over- the-counter remedy for an upset stomach) is bismuth sub-salicylate, C7H5BiO4. Analysis of a 1.7500-g sample of Pepto-Bismol yields 346 mg of bismuth. What percent by mass is bismuth subsalicylate in the sample? (Assume that there are no other bismuth-containing compounds in Pepto-Bismol.)
3.105 Nitric acid is often sold and transported as a concentrated 16 M aqueous solution. How many gallons of such a solution would be needed to contain the roughly 2.1109 pounds of HNO3 produced annually in the United States?
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Calculate each of the following quantities:(a) Total number of ions in 38.1 g of SrF₂(b) Mass in kilograms of 3.58 mol of CuCl₂.2H₂O(c) Mass in milligrams of 2.88x10^22 formula units of Bi(NO₃).35H₂O
Calculate the number of molecules present in each of the following samples.(a) 0.800 mol acetylene, C2H2, a fuel used in welding molecules(b) How many molecules are in a snowflake containing 3.00 10-5 g of H2O molecules(c) a 500. mg tablet of vitamin C, C6H8O6 NOTE THE UNITS OF mg. molecules(d) how many ATOMS are in the vitamin C sample in part (c)? ATOMS(d) how many ATOMS of oxygen are in the vitamin C sample in part (c)? ATOMS
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