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Citrus2011 [14]
3 years ago
14

How many atoms are in 24.6 moles of carbon?

Chemistry
1 answer:
alina1380 [7]3 years ago
8 0

Answer: There are 148.1412\times 10^{23} atoms of carbon in the given moles.

Explanation:

We are given 24.6 moles of carbon and we need to find the number of atoms.

According to mole concept:

1 mole of an element contains 6.022\times 10^{23} number of atoms.

So, 24.6 moles of carbon will contain 24.6\times 6.022\times 10^{23}=148.1412\times 10^{23} atoms.

Hence, there are 148.1412\times 10^{23} atoms of carbon in the 24.6 moles of carbon.

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c) Magnesium hydroxide (Mg(OH)2) has a molecular mass of 58.32 amu. It has 2 hydrogen atoms each with a mass of 1.01 amu; it has 1 magnesium atom with a mass of 24.3 amu and two oxygen atoms with a mass of 16.0 amu.

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Percentage carbon = (7*12.01 amu/130.2 amu)*100% = 64.6%

Percentage oxygen =(2*16 amu/130.2 amu)*100% = 24.6%

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