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muminat
2 years ago
8

strontium-90 has a half life of 29 years. if a site held 4000 kg of this isotope, approximately what mass of strontium-90 would

be left after 87 years?
Chemistry
1 answer:
Ludmilka [50]2 years ago
4 0

Answer:

125g

Explanation:

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olga55 [171]

Answer:

I say the 1st one I'm so terrible sorry if I'm wrong

Explanation:

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The state the water is in depends upon the temperature.  Each state (solid, liquid, and gas) has its own unique set of physical properties.

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3 years ago
Choose a depiction of a gas sample containing equal molar amounts of xenon and argon as described by kinetic molecular theory. R
Setler79 [48]

Answer:

On the attached picture.

Explanation:

Hello,

At first, it is important to remember that kinetic molecular theory help us understand how the molecules of a gas behave in terms of motion. In such a way, the relative velocity of a gas molecule has the following relationship with the gas' molar mass:

V∝\frac{1}{\sqrt{M} }

That is, an inversely proportional relationship which allows us to infer that the bigger the molecule the slower it. In this manner, as argon is smaller than xenon, it will move faster.

Now, as the gases are in equal molar amounts and considering that argon moves faster, on the attached picture you will find the suitable depiction of the gas sample, since red dots (argon) have a larger tail than the blue dots (xenon).

Best regards.

7 0
3 years ago
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sertanlavr [38]
<span>Isotopes are atoms of a particular element that contain a different number of neutrons.
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3 years ago
What are the limitations of Bronsted-Lowery concept???
HACTEHA [7]

Answer:

There is no limitation at all because that is the basic theory of solution electrolysis

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In the equation given above, there is conservation of MASS, CHARGE AND ENERGY.
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4 0
3 years ago
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