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A piece of copper has a mass of 660 g. How many atoms does the sample contain?
In the boxes above, enter the correct setup that would be used to solve this problem.
 Drag conversion units onto the boxes in the equation to make conversions. Some boxes can be left empty. Click on a unit to remove it from its position.660 g ×  ×  ×  = Invalid RatioInvalid RatioInvalid Ratio1 cm3 Cu = 9 g Cu 1 kg  = 1000 g 1 L  = 1000 cm39.5 × 1021 atoms Cu = 1 g Cu 1 cm3 = 1 mL 

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scme1702
The conversions that will be used are:

1 mole of copper / 63.5 grams of copper
6.02 x 10²³ atoms of copper / 1 mole of copper

Multiplying the given mass by these conversions,

660 g * (1 mol Cu / 63.5 g Cu) * (6.02 x 10²³ Cu atoms / 1 mole Cu)

The sample contains 6.25 x 10²⁴ atoms of copper

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