Select the BEST answer. VWhich of the following statements about 1.000 mole of N20 is TRUE? Do NOT worry about sig figs for this question, they are all correct. DO worry about values and units. A. 1.000 mole of N,0 contains 6.022 x 1023 O atoms B. 1.000 mole of N20 contains 6.022 x 1023 N, molecules C. 1.000 mole of N20 has a mass of 44.02 amu (atomic mass units)

Select the BEST answer. VWhich of the following statements about 1.000 mole of N20 is TRUE? Do NOT worry about sig figs for this question, they are all correct. DO worry about values and units. A. 1.000 mole of N,0 contains 6.022 x 1023 O atoms B. 1.000 mole of N20 contains 6.022 x 1023 N, molecules C. 1.000 mole of N20 has a mass of 44.02 amu (atomic mass units)

Chemistry for Engineering Students

3rd Edition

ISBN:9781285199023

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter3: Molecules, Moles, And Chemical Equations

Section: Chapter Questions

Problem 3.86PAE: Consider two samples of liquid: 1 mole of water (H2O) and 1 mole of ethanol (C2H50H). Answer each of...

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itamin B12 , cyancobalamin, is essential for human nutrition. Its molecular formula is C63H88CoN14O14P . A lack of this vita min in the diet can lead to anemia. Cyanocohalamin is the form of the vitamin found in vitamin supplements. l type='a'> What is the molar mass of cyanocobalamin to two decimal places? How many moles of cyanocohalamin molecules are present in 250 mg of cyanocobalamin? What is the mass of 0.60 mole of cyanocobalamin? How many atoms of hydrogen are in 1 .0 mole of cyanocobalamin? What is the mass of 1.0107 molecules of cyanocobalamin? What is the mass (in grams) of one molecule of cyanocobalamin?
Suppose that the atomic mass of C-12 is taken to be 5.000 amu and that a mole is defined as the number of atoms in 5.000 kg of carbon-12. How many atoms would there be in one mole under these conditions? (Hint: There are 6.0221023 C atoms in 12.00 g of C-12.)
3.78 Consider two samples of liquid: I mole of water (H2O) and 1 mole of ethanol. Answer each of the following questions. Note that none of these should require significant calculations. (a) Which sample contains more atoms? (b) Which sample contains more molecules? (c) Which sample has a larger mass?
3.79 Consider two samples. Sample A contains 2 moles of N2 and 1 mole of O2, and Sample B contains 1 mole of N2O5. (a) Which sample contains more molecules? (b) Which sample contains more oxygen atoms? (c) Which sample contains more nitrogen atoms?
Beta-blockers are a class of drug widely used to manage hypertension. Atenolol, a beta-blocker, is made up of carbon, hydrogen, oxygen, and nitrogen atoms. When a 5.000-g sample is burned in oxygen, 11.57 g of CO2 and 3.721 g of H2O are obtained. A separate experiment using the same mass of sample (5.000 g) shows that atenolol has 10.52% nitrogen. What is the simplest formula of atenolol?
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Consider two samples of liquid: 1 mole of water (H2O) and 1 mole of ethanol (C2H50H). Answer each of the following questions. Note that none of these should require significant calculations. (a) sample contains more atoms? (b) Which sample contains more molecules? (c) Which sample has a larger mass?
hat is the difference between the empirical and molecular for mulas of a compound? Can they ever be the same? Explain.
When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the product is carbon dioxide. :math>C(s)+O2(g)CO2(g) wever, when the amount of oxygen present during the burning of the carbon is restricted, carbon monoxide is more likely to result. :math>2C(s)+O2(g)CO(g) at mass of each product is expected when a 5.00-g sample of pure carbon is burned under each of these conditions?
A 0.755-g sample of hydrated copper(II) sulfate CuSo4xH2O was heated carefully until it had changed completely to anhydrous copper(II) sulfate (CuSO4 ) with a mass of 0.4183 g. Determine the value of x. [This number is called the number of waters of hydration of copper(II) sulfate. It specifies the number of water molecules per formula unit ofCuSO4 in the hydrated crystal.]