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zheka24 [161]
3 years ago
15

4 He + 54 Mn 2 25 How do you solve this?

Chemistry
2 answers:
Digiron [165]3 years ago
5 0

Answer:

you add

Explanation:

then you find the answer

Darya [45]3 years ago
3 0

no sorryyyyyyyyyyyyyyyyyyyyyyyyyy die

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Answer:

b)

Explanation:

It shows the natrual proggresion of a story and helps blend the narrtive together.

4 0
3 years ago
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What is the empirical formula for a compound that is 83.7% carbon and 16.3% hydrogen?
zubka84 [21]
Hello!

We use the amount in grams (mass ratio) based on the composition of the elements, see: (in 100 g solution)

C: 83.7% = 83,7 g 
H: 16.3% = 16.3 g 

Let us use the above mentioned data (in g) and values will be ​​converted to amount of substance (number of moles) by dividing by molecular mass (g / mol) each of the values, lets see:

C:  \dfrac{83.7\:\diagup\!\!\!\!\!g}{12\:\diagup\!\!\!\!\!g/mol} \approx 6.975\:mol

H: \dfrac{16.3\:\diagup\!\!\!\!\!g}{1\:\diagup\!\!\!\!\!g/mol} = 16.3\:mol

We note that the values ​​found above are not integers, so let's divide these values ​​by the smallest of them, so that the proportion is not changed, let's see:

C:  \dfrac{6.975}{6.975} = 1

H:  \dfrac{16.3}{6.975} \approx 2.3

Note: So the ratio in the smallest whole numbers of carbon to hydrogen is 3:7, t<span>hus, the minimum or empirical formula found for the compound will be:
</span>
\boxed{\boxed{C_3H_7}}\end{array}}\qquad\checkmark

I hope this helps. =)
8 0
3 years ago
SOMEONE HELP ME PLEASE ILL GIVE BRAINLY
Maksim231197 [3]

Answer:

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Explanation:

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Alexandra [31]

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Explanation:

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