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erastova [34]
4 years ago
10

Consider four sealed, rigid containers with the following volumes: 50 mL, 100 mL, 250 mL, and 500 mL. If each of these contains

.25 moles of helium gas at standard temperature, which container would have the greatest pressure?
Chemistry
1 answer:
dsp734 years ago
5 0
First, we assume that helium behaves as an ideal gas such that the ideal gas law is applicable.
                                     PV = nRT
where P is pressure, V is volume, n is number of moles, R is universal gas constant, and T is temperature. From the equation, if n, R, and T are constant, there is an inverse relationship between P and V. From the given choices, the container with the greatest pressure would be the 50 mL. 
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Which isotope in each pair is more stable? Why?(c) ²⁸₁₂Mg or ²⁴₁₂Mg
3241004551 [841]

Among  ²⁸₁₂Mg  ²⁴₁₂Mg, <u>²⁴₁₂Mg</u> is more stable.

<h3>Briefly explained</h3>

We can identify which isotope in the pair is more stable. Let's review the criteria that are used to determine a stable isotope. A stable isotope will have more neutrons than protons with a neutron to proton ratio somewhere between one and 1.52 On the high atomic number, we're up to 152 at low atomic numbers were closer to one.

More stable isotopes have an even number of protons and neutrons. And stable isotopes have their proton or neutron number equal to one of these magic numbers.

We have ²⁸₁₂Mg with 16 neutrons and 12 protons with the neutron to proton ratio of 1.33. And we compare that to ²⁴₁₂Mg With 12 neutrons and 12 protons and the neutrons to protons ratio of one. So we do have a relatively small Z value. So the new trying to approach on ratio should be close to one. Wherefore  ²⁸₁₂Mg , although both of these are even we do have a pretty high neutron to proton ratio for a low atomic number.

So ²⁸₁₂Mg is likely less stable While²⁴₁₂Mg is more stable.

Learn more about stable isotope

brainly.com/question/2028971

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7 0
2 years ago
PLEASE HELP HELP ME. THIS IS DUE TODAY PLEASE
ICE Princess25 [194]

Answer:

C

Explanation:

cause i'm smart

6 0
3 years ago
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What is the result of multiplying (2.5 × 1010) × (3.5 × 10-7)?
Kitty [74]
The result of multiplying that equation is 70,700.
4 0
4 years ago
When plants and animals die, their bodies are decomposed by organisms such as bacteria or fungi. Which statement is true regardi
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8 0
4 years ago
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How many liters of a 2.00 M NaOH solution are needed for a reaction that requires 3.55g of NaOH?
aleksandr82 [10.1K]

Answer:

5 litres of solution are requried

Explanation:

Given that the typical units of

concentration

are

m

o

l

⋅

L

−

1

, to get

concentration

or

amount of moles

or

volume of solution

we just have to take the appropriate product or quotient.

We want

1.0

⋅

m

o

l

N

a

O

H

:

this the product

Volume of solution

×

Concentration

.

So we need the quotient:

Moles of solute

Concentration

=

1.0

⋅

m

o

l

0.2

⋅

m

o

l

⋅

L

−

1

=

5

⋅

L

.

(i.e.

1

1

⋅

L

−

1

=

1

⋅

L

)

Note that we go to such trouble in including the units in these calculations as an extra check on our arithmetic. Sometimes you ask yourself should I divide or should I multiply. Dimensional analysis answers our question. We wanted an answer in

litres

, and we got one. This persuades us that we did the calculation right.

4 0
3 years ago
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