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3 years ago

Which is the best example of potential energy?

Chemistry

2 answers:

babymother [125]3 years ago

8 0

Answer:

holding a basketball in the air

Explanation:

the ball has potential to have a certain amount of energy but hasn't exerted it yet.

Ipatiy [6.2K]3 years ago

5 0

turning on a flash light

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Which statement about covalent bonds and electrons is true?

Illusion [34]

<span>D) Eectrons in covalent bonds are not always shared equally.</span>

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2 years ago

Read 2 more answers

Assuming a car (with a 70-L) gas tank can hold approximately 50,000 (5.00 * 10^4) g of octane(C8H18) or 50,000 (5.00 * 10^4) g o

konstantin123 [22]

Answer:

- From octane: $m_{CO_2}=1.54x10^5gCO_2$

- From ethanol: $m_{CO_2}=9.57x10^4gCO_2$

Explanation:

Hello,

At first, for the combustion of octane, the following chemical reaction is carried out:

$C_8H_{18}+\frac{25}{2} O_2\rightarrow 8CO_2+9H_2O$

Thus, the produced mass of carbon dioxide is:

$m_{CO_2}=5.00x10^4gC_8H_{18}*\frac{1molC_8H_{18}}{114gC_8H_{18}}*\frac{8molCO_2}{1molC_8H_{18}}*\frac{44gCO_2}{1molCO_2} \\\\m_{CO_2}=1.54x10^5gCO_2$

Now, for ethanol:

$C_2H_6O+3O_2\rightarrow 2CO_2+3H_2O$

$m_{CO_2}=5.00x10^4gC_2H_6O*\frac{1molC_2H_6O}{46gC_2H_6O}*\frac{2molCO_2}{1molC_2H_6O}*\frac{44gCO_2}{1molCO_2} \\\\m_{CO_2}=9.57x10^4gCO_2$

Best regards.

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3 years ago

What happens to a solid if thermal energy is reduced

kompoz [17]

When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.

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2 years ago

Convert 32 Fahrenheit to Celsius

valina [46]

Answer:

°F - 32/1.8000

Explanation:

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3 years ago

Which of these orbital filling diagrams are drawn correctly? (select all that apply)

shutvik [7]

Answer:

Explanation:

The option A is draw well about sha

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2 years ago