4 years ago

Write the fractions as a percent. If neccisary, round to the nearest tenth of a percent For both.

Mathematics

1 answer:

butalik [34]4 years ago

8 0

9/15 as a percent is 60%, so D.

4 1/5 as a percent is 420%, so B.

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Find the empirical formula of the compound containing 2.4 gram of carbon, 6.4 gram of oxygen and 0.2 gram of hydrogen

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Answer:

Empirical formula= COOH

Step-by-step explanation:

Molecular mass of the elements

Carbon= 12

Oxygen= 16

Hydrogen= 1

We divide the elements each with their molecular formula

Carbon= 2.4/12

Carbon= 0.2

Oxygen= 6.4/16

Oxygen= 0.4

Hydrogen= 0.2/1

Hydrogen= 0.2

Now we divide with the smallest result which is 0.2

Carbon= 0.2/0.2

Carbon = 1

Oxygen= 0.4/0.2

Oxygen= 2

Hydrogen= 0.2/0.2

Hydrogen= 1

So we have

Carbon 1, oxygen 2, hydrogen 1

Empirical formula= COOH

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

1.) IF f(x)=3x-5 and g(x)=x^2, find (fxg)(3)

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Please use * to denote mult. here, not "x." "x" is your variable and cannnot also be a symbol for mult.

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Now let x = 3:

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