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LenaWriter [7]
3 years ago
15

The atomic mass of carbon -13 is 13 it has six protons how many neutrons does this isotope have

Chemistry
1 answer:
Mrac [35]3 years ago
3 0

It has 7 neutrons. The atomic mass is the sum of protons and neurons, therefore you subtract the number of protons from the atomic mass to get the number of neutrons.

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Explanation:

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Approximate temperature of a .7 mold sample of a gas at 1.2 ATM and volume of .170 L
faust18 [17]
Assuming you meant a 0.7 mole sample of a gas, we can approximate this by assuming that the gas is acting ideally, and use the ideal gas law PV=nRT. Using the following values:
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3 years ago
The reaction 2A -> B is first order in A with a rate constant of 8.42 x 10-2 s-1 at 800oC. How long it will take for A to dec
lesantik [10]

Answer:

41.4 s

Explanation:

Given data

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Let's consider the following reaction of first order with respect to A.

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We can find the time that it will take for A to decrease from 5.00 M to 0.153 M using the following expression.

ln([A]/[A]_0)=-k.t\\ln(0.153M/5.00M)=-8.42 \times 10^{-2}s^{-1}   .t\\t = 41.4 s

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I think the answer is 0.8 ml.
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4 years ago
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