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What is the mass in grams of 4.85 x 10^22 Al atoms? (Report your answer to two places past the decimal

Sagot :

Answer:

2.17 gm Al

Explanation:

First, find the number of moles .   Then multiply by the mole weight of aluminum.

# moles =   4.85 x 10^22 / 6.022 x 10^23 = .08053 moles

.0805 moles * 26.981 gm/mole  = 2.173 gm

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