When active metals such as sodium are exposed to air, they quickly form a coating of metal oxide. The balanced equation for the reaction of sodium metal with oxygen gas is →→→→→2Na₂O(s) 4Na(s) + O₂(g) - Suppose a piece of sodium metal gains 2.05 g of mass after being exposed to air. Assume that this gain can be attributed to its reaction with oxygen. (a) What mass of O₂ reacted with the Na? men (b) What mass of Na reacted? (c) What mass of Na₂O formed?

When active metals such as sodium are exposed to air, they quickly form a coating of metal oxide. The balanced equation for the reaction of sodium metal with oxygen gas is →→→→→2Na₂O(s) 4Na(s) + O₂(g) - Suppose a piece of sodium metal gains 2.05 g of mass after being exposed to air. Assume that this gain can be attributed to its reaction with oxygen. (a) What mass of O₂ reacted with the Na? men (b) What mass of Na reacted? (c) What mass of Na₂O formed?

World of Chemistry

7th Edition

ISBN:9780618562763

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 54A

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