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kari74 [83]
4 years ago
11

An atom of gold has a mass of 3.271 x 10^-22g. how many atoms of gold are in 5.00g of gold?

Chemistry
2 answers:
Lostsunrise [7]3 years ago
5 0

Answer:

number of gold atoms = 1.528X10^{22}

Explanation:

The mass of one atom of gold is given to be = 3.271X10^{-22}

The mass of gold is given to be = 5.00g

In order to determine the number of atoms present in the 5 g of gold, we will divide the mass of the gold with the mass of each atom of the gold.

the number of atoms = \frac{massofgold}{massofatom}=\frac{5}{3.271X10^{-22}} =1.528X10^{22}

Thus number of gold atoms = 1.528X10^{22}

ra1l [238]4 years ago
4 0
5.00g Au x(1 atom Au/3.271x10^-22 g) = 1.52858x10^22 atoms
Since one of your given terms has only 3 significant figures (5.00g), your answer should only have 3 sig figs showing: 1.53x10^22 atoms Au

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