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12. What is the mass of 0.350 moles of molecular hydrogen gas (6 points) 13. How many atoms are in 0.027 moles KCl (6 points)
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All the questions are answer by using the simple mole concept and concept of stoichiometry which gives the relationship between masses of reactants and products.

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44 Answer: 12a massa Hemolarmarsi moles 2x0.350 30.700g. Marbelo atoms=280.027X6-022X1023 = 3.25x102Zateng. 22 H5 Noycar +302ܕܣ 13 . 25 =

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