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3 years ago

Identify IV and DV

Chemistry

1 answer:

Naya [18.7K]3 years ago

3 0

I believe it is A.
IV:type of energy DV: cost of bill

Hope it helps

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The practical limit to ages that can be determined by radiocarbon dating is about 41000-yr-old sample, what percentage of the or

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Answer:

In percentage, the sample of C-4 remains = 0.7015 %

Explanation:

The Half life Carbon 14 = 5730 year

$t_{1/2}=\frac {ln\ 2}{k}$

Where, k is rate constant

So,

$k=\frac {ln\ 2}{t_{1/2}}$

$k=\frac {ln\ 2}{5730}\ hour^{-1}$

The rate constant, k = 0.000120968 year⁻¹

Time = 41000 years

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

So,

$\frac {[A_t]}{[A_0]}=e^{-0.000120968\times 41000}$

$\frac {[A_t]}{[A_0]}=0.007015$

<u>In percentage, the sample of C-4 remains = 0.7015 %</u>

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3 years ago

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It is nonvolatile solute

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3 years ago

How do properties, such as Density, help us to classify and identify matter?

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anzhelika [568]

Answer:

True

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3 years ago