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tiny-mole [99]
2 years ago
8

The mass of 0.357 mol of gold is?

Chemistry
1 answer:
MA_775_DIABLO [31]2 years ago
6 0
0.357mol Au * (196.96g/1 mol)= 70.1g

You must use dimensional analysis to solve this problem by using the molar mass of Au (gold) to find out how much mass would be in only .357mol Au

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Erbium (Er) is element 68 on the periodic table. A sample contains 5.04×1023 atoms of Er. Calculate the amount of Er.
Korvikt [17]

Answer:

139.98 g to nearest hundredth.

Explanation:

Using Avogadro's Number:

One mole (167.26 g) of Erbium  equates to  6.022141 * 10^23 atoms.

So 5.04 * 10^23 = 167.26 * 5.04/6.022141

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Answer:

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