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olasank [31]
3 years ago
9

Use your periodic table and calculator as needed for the following question.

Chemistry
1 answer:
sveticcg [70]3 years ago
7 0
Hope you find this answer I need points
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What is the molar mass of CH4 (C=12.011 amu H = 1.008 amu)
never [62]

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16.05 amu

Explanation:

12.011 rounds to about 12.01 and 1.008 rounds to about 1.01 so when adding you'd do [12.01 + (1.01×4)]= 16.05

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3 years ago
What fraction of a sample of 6832ge, whose half-life is about 9 months, will remain after 2.9 yr ?
Viefleur [7K]
<span>The half-life of 9 months is 0.75 years. 2.0 years is 2.0/0.75 = 2.67 half-lives. Each half-life represents a reduction in the amount remaining by a factor of two, so: A(t)/A(0) = 2^(-t/h) where A(t) = amount at time t h = half-life in some unit t = elapsed time in the same unit A(t)/A(0) = 2^(-2.67) = 0.157 15.7% of the original amount will remain after 2.0 years. This is pretty easy one to solve. I was happy doing it.</span>
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3 years ago
What is the symbol for the carbon isotope with seven neutrons?
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Vanyuwa [196]

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Which of the following is a type of cell organelle?
icang [17]

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C . Dna

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