CHEM 120 unit 1| 59 Questions| With Complete Solutions

An object has a mass of 7.748 g and a volume of 5.6 mL. What is its density? Give your answer to the nearest tenths place correct answer: 1.4 g/mL An object has a mass of 12.876 g and a density of 1.5 g/mL. What is its volume? Give your answer to the tenths place correct answer: 8.6 mL An object has a volume of 3.8 mL and a density of 6.3 g/mL. What is its mass? Give your answer to the ones place (for example 21) correct answer: 24 g An object has a mass of 40.517 g and a density of 4.9 g/mL. What is its volume? Give your answer to the tenths place correct answer: 8.3 mL An object has a mass of 3.745 g and a density of 0.7 g/mL. What is its volume? Give your answer to the tenths place (for example 2.1) correct answer: 5.4 mL An atom of element Ne has an atomic number of 10 and a mass number of 21. How many electrons does it have? correct answer: 10 An atom of element C has 6 electrons and 6 protons. What is the atomic number of this atom? correct answer: 6 An atom of element Mg has an atomic number of 12 and a mass number of 24. How many electrons does it have? correct answer: 12 An atom of element F has 9 protons and 10 neutrons. What is the mass number of this atom? correct answer: 19 An atom of element N has an atomic number of 14 and has 15 neutrons.