Answer this correctly, only sincere answers please. I really need help. I will do all I can to make someone answer this. Thanks!
1 answer:
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Answer:
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Explanation:
If we know the grams of a chemical compound in a specific reaction, it is possible to know the percentage of each atom that composes it.
For the Aluminum Oxide in this problem, we know its total weight and the grams of each component.
therefore we can determine the percentage ratio of its components through:
For Al
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In the same way for oxygen
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Answer:
Explanation:
Hello!
In this case, since the reaction between calcium hydroxide and hydrochloric acid shows a 2:1 mole ratio between them:
We need to use the following mole ratio:
That can be written in volumes and concentrations:
Thus, we solve for the volume of HCl as it is the unknown:
Therefore, we plug in to obtain:
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