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Alex
3 years ago
15

Magnesium has three isotopes. Magnesium-24 has a percent abundance of 78.99% Magnesium- 26 has a percent abundance of 11.01% Wha

t is the percent abundance of mangesium- 25?
Chemistry
1 answer:
Inessa05 [86]3 years ago
4 0
Percentage of abundance of Magnesium = 78.99%

<span>Magnesium- 26 has a percent abundance = 11.01%
</span>
100-78.99-11.01=10%
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Is primarily responsible for acid rain in the northeast United States Uranium-238 Answer A: Uranium-238 A Coal Answer B: Coal B
Georgia [21]

Based on the available facts, in the northeast United States, the biggest source of acid rain producing pollutants comes from the burning of coal by power plants to produce electricity.

<h3>What is acid rain?</h3>

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In the northeast United States, the biggest source of acid rain producing pollutants comes from the burning of coal by power plants to produce electricity.

Learn more about acid rain at: brainly.com/question/718250

3 0
3 years ago
Which of the following gas samples would contain the same amount of gas as 200 mL of helium, He(g), at 25° C and 1 atm?
monitta

Answer:

200\; \rm mL of neon \rm Ne\, (g) at 25^{\circ} \rm C and 1\; \rm atm (the second choice) would contain an equal number of gas particles as 200\; \rm mL\! of \rm He \, (g) at 25^{\circ} \rm C\! and 1\; \rm atm\! (assuming that all four gas samples behave like ideal gases.)

Explanation:

By Avogadro's Law, if the temperature and pressure of two ideal gases is the same, the number of gas particles in each gas would be proportional to the volume of that gas.

All four gas samples in this question share the same temperature and pressure. Hence, if all these gases are ideal gases, the number of gas particles in each sample would be proportional to the volume of that sample. Two of these samples would contain the same number of gas particles if and only if the volume of the two samples is equal to one another.

The second choice, 200\; \rm mL of neon \rm Ne\, (g) at 25^{\circ} \rm C and 1\; \rm atm, is the only choice where the volume of the sample is also 200\; \rm mL \!. Hence, that choice would be the only one with as many gas particles as 200\; \rm mL\! of \rm He \, (g) at 25^{\circ} \rm C\! and 1\; \rm atm\!.

7 0
3 years ago
A.
jek_recluse [69]

Answer:

A

Explanation:

The empirical formula won't always represent a molecule if the molecular formula is not the smallest ratio between elements.

5 0
3 years ago
Using dimensional analysis, how many seconds are in 1.2 days?
julsineya [31]

Answer:

103,680 seconds

Explanation:

1.2 days x  \frac{24 hours}{1 day} \frac{60 minutes}{1 hour} \frac{60 seconds}{1 minute}

(1.2)(24)(60)(60) = 103,680 seconds

4 0
3 years ago
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 <span>I would say only if one of your data points is the origin. But your experiment could have started with a non-zero velocity, for instance, which would rule out the origin as one of your data points. Even so, a "best fit" is not meant to be perfect, it is only meant to be the best that you can do with your particular data set.</span>
8 0
3 years ago
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