A compound contains two or more elements chemically combined
Answer:

Explanation:
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In this case, as the atomic mass of coppe is 63.546 g/mol, with the given mass with can compute the moles as shown below:

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<span> hydraulic pumps, flying machines, and war machines.</span>
Answer:

for the balanced equation

The given reaction:
<span>ch3ch2cooh (aq) ↔ ch3ch2coo- (aq) + h+ (aq)
is called a reversible reaction.
This means that, the reaction does not reach an end point.
In this type of reactions, reactants react together to form products, while products combine together to form reactants.
So, the reaction proceeds in both direction forming both reactants and products.</span>