Calculate the mass (grams) of 0.750 moles of Al₂(Cr₂O₇)₃.

Name: Calculate the mass (grams) of 0.750 moles of Al 2 (Cr 2 O 7 ) 3 .
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Question

Quizplus · Accepted Answer

The molecular formula for Al2(Cr2O7)3 involves calculating the molar mass by adding the atomic masses of all atoms: 2 Al (26.98 g/mol each), 6 Cr (51.9961 g/mol each), and 21 O (15.999 g/mol each). The total molar mass is approximately 701.68 g/mol. For 0.750 moles, the mass is 0.750 moles * 701.68 g/mol ≈ 526.26 g, which rounds to 526 g.

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