How many moles of hydrogen are present in 1.7 g ammonia?
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Explanation:This is because the molar mass of ammonia is N (14 amu) + 3 x H (1 amu) = 17 amu, and a mole is one gram of weight per amu so 17 grams in a mole. By definition, a mole is 6.022 x 10^23 atoms
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