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konstantin123 [22]
3 years ago
9

a 2-kg bowling ball is 2.5 meter off the ground on a post when it falls just before it reachers the ground it is traveling 7 m/s

.Assuming that there is no air resistance wich statement is true
Chemistry
1 answer:
nikklg [1K]3 years ago
8 0
The answer to your question is the mechanical energy is conserved.
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To convert a mass of a substance to units of moles, we would need the molar mass of the substance since is it describes the mass of one mole of that substance. For CuCl2, the molar mass is 134.45 g/mol. For Al, the atomic mass is 26.98 g/mol.

2.50 g CuCl2 ( 1 mol / 134.45) = 0.019 mol CuCl2
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Explanation:

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A & E

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