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MAXImum [283]
4 years ago
9

How many moles are in 55.0 g calcium nitrate?

Chemistry
1 answer:
Alex17521 [72]4 years ago
5 0

Answer: 0.335 mols Ca(NO3)2

Explanation: To go from grams to mols you divide grams by the molar mass of the substance so, 55/164.088 = 0.335

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A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density ?
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Explanation:

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density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{40.5}{15}  = 2.7 \\

We have the final answer as

<h3>2.7 g/mL</h3>

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