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3 years ago

NEED HELP ASAP

Chemistry

2 answers:

ira [324]3 years ago

8 0

Answer:

i think its the 3 thired one sorry if rong but good luck

Explanation:

pychu [463]3 years ago

7 0

Answer:

The sample is made up of a single element. t or f

Explanation:

Forgot about the t or f! Its true.

Dam bro.....

1. T

2. F

3. T

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A sample of a compound contains 0.300 mol of carbon and 1.20 mol of hydrogen. What is the empirical formula of the comp

Margarita [4]

Answer:

CH4

Explanation:

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Anvisha [2.4K]

Answer:

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What is the relative atomic mass of a hypothetical element that consists isotopes in the indicated natural abundances

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The given question is incomplete. The complete question is:What is the relative atomic mass of a hypothetical element that consists isotopes in the indicated natural abundances.

Isotope mass amu Relative abundance

1 77.9 14.4

2 81.9 14.3

3 85.9 71.3

Express your answer to three significant figures and include the appropriate units.

Answer: 84.2 amu

Explanation:

Mass of isotope 1 = 77.9

% abundance of isotope 1 = 14.4% = $\frac{14.4}{100}=0.144$