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4 years ago

1. Which fuel was more efficient (produced more calories per gram)? Explain your answer.

Chemistry

1 answer:

OleMash [197]4 years ago

4 0

Answer:

The comparison is between Fuel canister (diethylene glycol) or Tea candle (paraffin)

The answer is tea candle( paraffin)

Explanation:

A fuel’s efficiency is based on its reaction with air(oxygen). It is said to be efficient when it burns well when exposed to air(oxygen).

Tea candle( paraffin) burns more efficiently in the presence of oxygen when compared to fuel canister( diethylene glycol) due to the hydrogen bonds in the molecules of fuel canister( diethylene glycol) making it more stable and having a lesser affinity to air (oxygen) than those of tea candle (paraffin).

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tekilochka [14]

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3 years ago

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What is the mass of 4.5 x 10^22 molecules of hydrogen peroxide (H2O2)? Show your work in the space below.

valentinak56 [21]

Given :

Number of molecules of hydrogen peroxide, N = 4.5 × 10²².

To Find :

The mass of given molecules of hydrogen peroxide.

Solution :

We know, 1 mole of every compound contains Nₐ = 6.022 × 10²³ molecules.

So, number of moles of hydrogen peroxide is :

$n = \dfrac{N}{N_a}\\\\n = \dfrac{4.5\times 10^{22}}{6.022\times 10^{23}}\\\\n = 0.0747 \ moles$

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m = n × M.M

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3 years ago

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Rashid [163]

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umka21 [38]

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Explanation:

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