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Find the mass of 1 cm3 of copper.

density= mass / volume

mass= density * volume (density is about 8.96 g cm-3)

mass= 8.96 g cm-3 * 1 cm3 = 8.96 g

no. of moles = mass / Molar mass =8.96 g / 63.5 g mol-1 = 0.14 mol

no. of copper atoms in 1 cm3 of copper= 0.14 mol * 6.022 *1023 =8.4 * 1022 atoms

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12y ago
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12y ago

Here is the process for finding the answer. Weigh one cubic centimeter of copper on a scale that reports the weight in grams. Take that weight, in grams), and multiply it by 63.546 (which is the atomic weight of copper) to get how many gram atomic weights of copper is in one cubic centimeter of copper. Take that number and multiply it times Avagadros Number which is the number of atoms in one gram atomic weight of any element. The resulting number is how many atoms are in one cubic centimeter of copper. Avagadros Number is shown below:

6.0221415 × 1023

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11y ago

4.02*10625

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Q: How many atoms are there in a 1cm cube of copper?
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