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Mars2501 [29]
3 years ago
8

The electrical current in a circuit is measured in which of the following units.

Chemistry
1 answer:
Vikentia [17]3 years ago
6 0
The answer should be volts
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Pentane is a small liquid hydrocarbon, between propane and gasoline in size at C5H12. The density of pentane is 0.626 g/mL and i
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Answer : The fuel value and the fuel density of pentane is, 49.09 kJ/g and 3.073\times 10^4kJ/L respectively.

Explanation :

Fuel value : It is defined as the amount of energy released from the combustion of hydrocarbon fuels. The fuel value always in positive and in kilojoule per gram (kJ/g).

As we are given that:

\Delta H^o_{comb}=-3535kJ/mol

Fuel value = \frac{\Delta H^o_{comb}}{\text{Molar mass of pentane}}

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Fuel value = \frac{3535kJ/mol}{72g/mol}

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Now we have to calculate the fuel density of pentane.

Fuel density = Fuel value × Density

Fuel density = (49.09 kJ/g) × (0.626g/mL)

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Thus, the fuel density of pentane is 3.073\times 10^4kJ/L

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Why is the piece of coal layered?
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I remember from last year but I'm not totally sure. Good luck!

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