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Galina-37 [17]
3 years ago
6

Good chemistry question

Chemistry
1 answer:
NeX [460]3 years ago
5 0
Compared to the charge and mass of a proton an electron has......

A proton has approximately the same mass as..........
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3 years ago
8. What is the mass of 4.50 x 1022 Cu atoms?​
vladimir2022 [97]

Answer:

4.7485 g

Explanation:

4.50 x 10^22 Cu atoms * (1 mol Cu / 6.022 x 10^23 Cu atoms) * 63.546 g Cu/(mol Cu) = 4.7485 g

In every mole of Cu, there are 6.022 x 10^23 atoms (Avogadro's number). The molecular weight of copper is 63.546 g/mol.

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Which of the following is a pure substance: sugar, salt water, or pepper? Explain how you know.
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