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Alla [95]
3 years ago
13

Brainliest if correct!!!!!

Chemistry
2 answers:
BigorU [14]3 years ago
7 0

Answer:

A

Explanation:

A catalyst speeds up a reaction by lowering the required activation energy, so it's not B. Like previously stated, the catalyst lowers the activation energy required, so it's not C either. This leaves us with A. Just to double check, does a catalyst speeds up a reaction? Yes! So like it says in A, a catalyst causes the equilibrium to be reached faster. Have a nice day! :)

BlackZzzverrR [31]3 years ago
4 0

Answer:

A

Explanation:

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<u>Explanation:</u>

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By Stoichiometry of the reaction:

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\%\text{ composition of KBr}=\frac{\text{Mass of KBr}}{\text{Mass of mixture}}\times 100

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\%\text{ composition of KBr}=\frac{0.4998g}{5.000g}\times 100=9.996\%

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