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IgorLugansk [536]
3 years ago
11

What is the percent composition of all the components of C18H308

Chemistry
1 answer:
saveliy_v [14]3 years ago
8 0
C = 62.3%
H = 0.9%
O = 36.9%
These are rounded up, hope this helps
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What is the density of a sample of a substance with a volume of 120ml<br> and a mass of 90g?
tigry1 [53]

Answer:

<h3>The answer is 0.75 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass = 90 g

volume = 120 mL

We have

density =  \frac{90}{120}  =  \frac{9}{12}  =  \frac{3}{4}  \\

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<h3>0.75 g/mL</h3>

Hope this helps you

6 0
2 years ago
Elements that do not have full outer electron shells will donate, share, or take from other atoms. Choose the items that have th
Gnesinka [82]

Answer:

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Explanation:

AI+ZN+H=YTH

7 0
3 years ago
Given that cao(s) + h2o(l) → ca(oh)2(s), δh°rxn = –64.8 kj/mol, how many grams of cao must react in order to liberate 525 kj of
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Answer:

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Explanation:

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1.0 mol of CaO liberates → – 64.8 kJ.

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