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alisha [4.7K]
3 years ago
5

Use the drop-down menus to complete the statement.

Chemistry
2 answers:
creativ13 [48]3 years ago
4 0

Answer:

Commutator and Current

Explanation:

sweet [91]3 years ago
3 0

Answer:commutator then current are the answers. I just took the question.

Explanation:

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a substance is analyzed to have a percent composition of 74.186% sodium and 25.814% fluorine. calculate the empirical formula
Novosadov [1.4K]

Answer:

Na₂₆F₁₁

Explanation:

We find the moles of the substance assuming 100 g of the substance is present. Why do we take 100 g? Because then the percent of sodium/fluorine, would be the g of sodium/fluorine respectively:

74.186 g Sodium | 1 mol Sodium/23 g              =>       3.2255 mol Na    

25.814 g Fluorine | 1 mol Fluorine/19 g             =>       1.3586 mol F

Divide each by smallest number of moles:

3.2255/1.3586 = 2.37

1.3586/1.3586 = 1

Multiply by common number to get a smallest whole number:

2.37*11 = 26,

1*11 = 11

The empirical formula is Na₂₆F₁₁

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3 years ago
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IrinaVladis [17]

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