Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 2 - Matter and Change - 2.4 Chemical Reactions - 2.4 Lesson Check: 38

Answer

43.2 g of water

Work Step by Step

This question is based on the law of conservation of mass. In every chemical and physical change, mass is conserved. In the reaction H + O = water. 4.8 g of Hydrogen and 38.4 g of Oxygen produce water. According to the law of conservation of mass, mass remains the same before and after the reaction so the mass of hydrogen plus the mass of oxygen equals the mass of water. Hydrogen mass + Oxygen mass = Water mass 4.8 g + 38.2 g = 43.2 g
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