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A solution of ammonia and water contains 1.80×1025 water molecules and 7.00×1024 ammonia molecules. How many total hydrogen atoms are in this solution?

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In N H 3 : 3 Hydrogen + 1 Nitrogen atom

3 * 7 * 10 ^(24)= 21 * 10^(24) = 2.1 * 10 ^(25)
In H 2 O : 2 Hydrogen + 1 Oxygen atom

2 * 1.8 * 10 ^(25) = 3.6 * 10 x^(25)
Total Hydrogen atoms:

2.1 * 10 ^(25) +3.6 * 10 ^(25) = 5.7 * 10 ^(25)

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