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atroni [7]
1 year ago
12

Please help me with number 4 and 5 on my study guide

Chemistry
1 answer:
Shtirlitz [24]1 year ago
5 0

Answer:

help with problem 4

Explanation:

4. protons are equal to atomic numbers. neutrons are atomic mass minus atomic number. electrons are equal to protons.

5. I don't know, sorry.

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3 years ago
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You have 500,000 atoms of a radioactive substance. After 2 half-lives have past, how many atoms remain?
Aleonysh [2.5K]

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2 years ago
Calculate the work done when an ideal gas expands isothermally and reversibly in a piston and cylinder assembly for expansion of
pantera1 [17]

Answer:

W=5743.1077\ J

Explanation:

The expression for the work done is:

W=RT \ln \left( \dfrac{P_1}{P_2} \right)

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Given that:

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Applying in the equation as:

W=8.314\times 300 \ln \left( \dfrac{10}{1} \right)

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W=2.30258\times \:2494.2

W=5743.1077\ J

5 0
3 years ago
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