Molar Masses Answers

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Magnesium hydroxide (Mg(OH)2): g/mol

Iron(III) oxide (Fe2O3): g/mol

Ammonia (NH3): g/mol

Use the periodic table to determine how many atoms of phosphorus (P) are in a sample that has a mass of 172.90 g.

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Select the correct mass for each of the samples described below.3.01 × 1023 molecules H2O✔ 9.01 g18.02 g36.00 g

8.32 × 1020 formula units CaBr2✔ 0.276 g199.88 g145,000 g

1.93 × 1026 molecules XeF6✔ 78,600 g0.77 g245.29 g