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Dmitrij [34]
3 years ago
9

Which area of science is considered the central science?

Chemistry
1 answer:
Nataly [62]3 years ago
6 0

Answer:

Chemistry

Explanation:

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Radioactive gold-198 is used in the diagnosis of liver problems. The half-life of this isotope is 2.7 days. If you begin with a
monitta

Answer: 6.1 mg

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{2.7days}=0.26days^{-1}

b) sample remains after 1.4 days

1.4=\frac{2.303}{0.26}\log\frac{8.6}{a-x}

0.16=\log\frac{8.6}{a-x}

\frac{8.6}{a-x}=1.4

(a-x)=6.1mg

The sample remains after 1.4 days is 6.1 mg

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Carbon dioxide contains chemical bonds between oxygen and carbon. What particles are between the carbon and oxygen atoms? What k
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The boundary created by two plates moving away from each other is a boundary.
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