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4 years ago

What is the predominant use of oil in the United States?

Chemistry

1 answer:

Talja [164]4 years ago

8 0

Answer:

Its electricity production .

Explanation:

hope it helps

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What is the most electronegative element?

erma4kov [3.2K]

The most electronegative element is fluorine. And since it is the most electronegative element the electrons tend to "hang out" more toward the fluorine atom when fluorine is covalently bonded to other atoms. Hope this answers the question. Have a nice day.

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3 years ago

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To separate a mixture of iron filings and salt, the most efficient method would be

CaHeK987 [17]

Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet

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4 years ago

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When elements form bonds, it changes their ______ properties. The answer is..?

Arturiano [62]

Answer:

chemical and physical

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3 years ago

Consider the following balanced equation for the following reaction:

balandron [24]

Answer: The amount of carbon dioxide formed in the reaction is 47.48 grams

Explanation:

For the given chemical equation:

$15O_2(g)+2C_6H_5COOH(aq.)\rightarrow 14CO_2(g)+6H_2O(l)$

To calculate the actual yield of carbon dioxide, we use the equation:

$\%\text{ yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100$

Percentage yield of carbon dioxide = 83 %

Theoretical yield of carbon dioxide = 1.30 moles

Putting values in above equation, we get:

$83=\frac{\text{Actual yield of carbon dioxide}}{1.30moles}\times 100\\\\\text{Actual yield of carbon dioxide}=\frac{1.30\times 83}{100}=1.079moles$

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of carbon dioxide = 44 g/mol

Moles of carbon dioxide = 1.079 moles

Putting values in above equation, we get:

$1.079mol=\frac{\text{Mass of carbon dioxide}}{44g/mol}\\\\\text{Mass of carbon dioxide}=(1.079mol\times 44g/mol)=47.48g$

Hence, the amount of carbon dioxide formed in the reaction is 47.48 grams

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4 years ago

The compound fes is an example of a(n) element ionic compound covalent compound atom

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FeS is an example of an ionic compound as in the formula there is a metal of Fe iron chemically bonded to the nonmetal S sulphur. Resulting in a strong electrostatic attraction due to the transfer of valence electrons from the iron to the Sulphur.

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3 years ago