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Delicious77 [7]
3 years ago
9

Which of the following is true about mixtures and compounds? A compound forms when different substances chemically combine to fo

rm a new substance. A mixture contains different substances that are not chemically combined with one another. Mixtures and compounds are both made of two or more different substances. all of these
Chemistry
2 answers:
Musya8 [376]3 years ago
6 0
All of these are true
Monica [59]3 years ago
3 0
All of them are true.
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How many molecules are in 41.8 g of sulfuric acid
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× 10²³ molecules are in 41.8 g of sulfuric acid

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The first step is to convert 41.8 g of sulfuric acid to moles by dividing the mass of sulfuric acid by its molar mass.

Molar mass of sulfuric acid, H₂SO₄ = 98.079 g/mol

Mole=\frac{Mass}{Molar\text{ }mass}=\frac{41.8\text{ }g}{98.079\text{ }g\text{/}mol}=0.426187053\text{ }mol

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Therefore, 0.426187053 moles of sulfuric acid is equal

\frac{0.426187053\text{ }mol}{1\text{ }mol}\times6.022×10²³\text{ }molecules=2.57\times10^{23}\text{ }molecules

Thus, 2.57 × 10²³ molecules are in 41.8 g of sulfuric acid.

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