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General, Organic, and Biological Chemistry: Structures of Life | 4th Edition | ISBN: 9780321750891 | Authors: Karen C. Timberlake
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Sodium reacts with oxygen to produce sodium oxide.4Na(s) +

Chapter 6, Problem 51QP

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QUESTION:

Sodium reacts with oxygen to produce sodium oxide.4Na(s) + O2(g) ? 2Na2O(s)a. How many grams of Na2O are produced when 57.5 g of Na reacts?b. If you have 18.0 g of Na, how many grams of O2 are required for reaction?c. How many grams of O2 are needed in a reaction that produces 75.0 g of Na2O?

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QUESTION:

Sodium reacts with oxygen to produce sodium oxide.4Na(s) + O2(g) ? 2Na2O(s)a. How many grams of Na2O are produced when 57.5 g of Na reacts?b. If you have 18.0 g of Na, how many grams of O2 are required for reaction?c. How many grams of O2 are needed in a reaction that produces 75.0 g of Na2O?

ANSWER:

Solution 51 QP:Step 1: (a)Here, we are going to find out the grams of Na2O are produced when 57.5 g of Na reacts.Given that4Na(s) + O2(g) 2Na2O(s)4.0 moles of Na = 10 mol of O2 = 2.0 moles of Na2OMolar mass of Na = 23.0 g/molThus, n = = 2.5 moles of NaTherefore,= Na2OWe know thatThe molar mass of Na2O = 61.9 g/molThus, the mass of Na2O are produced when 57.5 g of Na reacts = 61.9 g/mol = 77.37 g________________

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