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Ludmilka [50]
3 years ago
14

If we start with 20 atoms of plutonium – 239, how many would remain after 48,240 years?

Chemistry
1 answer:
Zepler [3.9K]3 years ago
7 0

Answer:

If we start with 20 atoms of plutonium – 239, how many would remain after 48,240 years?

Explanation:

So, before we are going to tackle this topic, I would discuss how to remain it as soon as possible. Like this, go to the site with so many answers to be seen. So m SC ndkz ek Afe sifrhidbjdjwsb in free jdbsjjkn WA jdj ew

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Calculate the molality of 75.0 grams of MgCl2 (molar mass=95.21 g/mol) dissolved in 500.0 g of solvent.
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<u>Answer:</u> The molality of magnesium chloride is 1.58 m

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To calculate the molality of solution, we use the equation:

\text{Molality}=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}

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Putting values in above equation, we get:

\text{Molality of }MgCl_2=\frac{75.0\times 1000}{95.21\times 500.0}\\\\\text{Molality of }MgCl_2=1.58m

Hence, the molality of magnesium chloride is 1.58 m

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