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2 years ago

Answer both 8 and 9 will give u brain list with explanation as well so don’t just answer

Chemistry

1 answer:

goldfiish [28.3K]2 years ago

6 0

Answer:

8. the answer is B.

9. the answer is A.

Explanation:

Hello!

8. In this case, by bearing to mind that the limiting reactant is always completely consumed and the excess one remain as a leftover at the end of the reaction, we can also infer that as all the limiting reactant is consumed, it must determine the maximum amount of product as the excess reactant will hypothetically produce a greater mass than expected; thus, the answer to this question is B.

9. In this case, since the mole ratio of oxygen to water is 1:2, the following proportional factor is used to calculate the produced mass of water:

$3molO_2*\frac{2molH_2O}{1molO_2}=6molH_2O$

Thus, the answer is this case is A.

Best regards!

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Complete question is;

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Answer:

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Explanation:

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3 years ago

A cup of sugar has a volume of 237 ml. What is the mass of the сup of sugar if the density is 1.59 g/mL?

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Answer:

$\boxed {\tt 376.83 \ grams}$

Explanation:

The density formula is

$d=\frac{m}{v}$

Rearrange the formula for mass, m, by multiplying both sides of the equation by v.

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$d*v=m$

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$d= 1.59 \ g/mL \\v= 237 \ mL$

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Multiply. Note that the milliliters, or mL will cancel each other out.

$m=1.59 \ g * 237$

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