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1. 6.02 x 1023 is called a. Avogadro's number. b. Newton's C. Aristotle's d. Planck's mass. 2. The mass in grams of one mole of any pure substance is called its a. atomic b. formula C. molar d. molecular 3. If 24 g of carbon is measured on a balance, how many atoms have been indirectly d. 12.04 x 10 counted? a. 2 b. 24 C. 6.02 x 1023

1. 6.02 x 1023 is called a. Avogadro's number. b. Newton's C. Aristotle's d. Planck's mass. 2. The mass in grams of one mole of any pure substance is called its a. atomic b. formula C. molar d. molecular 3. If 24 g of carbon is measured on a balance, how many atoms have been indirectly d. 12.04 x 10 counted? a. 2 b. 24 C. 6.02 x 1023

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Chemistry
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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
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1. 6.02 x 1023 is called a. Avogadro's number. b. Newton's C. Aristotle's d. Planck's 2. The mass in grams of one mole of any pure substance is called its mass. a. atomic b. formula C. molar d. molecular 3. If 24 g of carbon is measured on a balance, how many atoms have been indirectly counted? a. 2 b. 24 C. 6.02 x 1023 d. 12.04 x 10 4. Which element has a molar mass of 31 g/mole? a. Potassium b. Phosphorus C. Gallium d. Palladium b. 5. Which is the mass of an atom of calcium? 20 amu a. b. 20 g C. 40 amu d. 40 g 6. A formula that shows the simplest whole-number ratio of the atoms in a compound is the structural formula. molecular formula. ideal formula. a. C. b. d. empirical formula. 7. The molar mass of an element is the mass of one gram of the element. a. atom of the element. C. b. liter of the element. d. mole of the element. To determine the molar mass of an element, one must know the element's Avogadro number. c. atomic number. 8.. number of isotopes. average atomic mass. a. b. d. What is the molar mass of magnesium? b. 24.305 g 9. 12.00 g C. 26.982 g d. 22.990 g a. What is the empirical formula for a compound that is 36.1% Ca and 63.9% CI? CaCl 10. b.. CaCl C. CazCl d. CazClz a. 11.The molecular formula for vitamin C is CeHOs. What is the empirical formula? C. CH20 CHO b.CaH4Oa d. C2H4O2 a.
Transcribed Image Text:1. 6.02 x 1023 is called a. Avogadro's number. b. Newton's C. Aristotle's d. Planck's 2. The mass in grams of one mole of any pure substance is called its mass. a. atomic b. formula C. molar d. molecular 3. If 24 g of carbon is measured on a balance, how many atoms have been indirectly counted? a. 2 b. 24 C. 6.02 x 1023 d. 12.04 x 10 4. Which element has a molar mass of 31 g/mole? a. Potassium b. Phosphorus C. Gallium d. Palladium b. 5. Which is the mass of an atom of calcium? 20 amu a. b. 20 g C. 40 amu d. 40 g 6. A formula that shows the simplest whole-number ratio of the atoms in a compound is the structural formula. molecular formula. ideal formula. a. C. b. d. empirical formula. 7. The molar mass of an element is the mass of one gram of the element. a. atom of the element. C. b. liter of the element. d. mole of the element. To determine the molar mass of an element, one must know the element's Avogadro number. c. atomic number. 8.. number of isotopes. average atomic mass. a. b. d. What is the molar mass of magnesium? b. 24.305 g 9. 12.00 g C. 26.982 g d. 22.990 g a. What is the empirical formula for a compound that is 36.1% Ca and 63.9% CI? CaCl 10. b.. CaCl C. CazCl d. CazClz a. 11.The molecular formula for vitamin C is CeHOs. What is the empirical formula? C. CH20 CHO b.CaH4Oa d. C2H4O2 a.
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