The two main products of the combustion of gasoline in an automobile engine are

Chemistry

2 answers:

erastova [34]2 years ago

8 0

Two toxic gases carbon monoxide and nitrogen oxide NO and CO

kozerog [31]2 years ago

4 0

There is an excess of oxygen, the two main products should be carbon dioxide gas and water vapor. If the oxygen supply is limited, the fuel will undergo incomplete combustion and produce carbon monoxide, water, and sometimes carbon.

Hope this helped! :)

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Two samples of gold that have different temperatures are placed in contact with one another. Heat will flow spontaneously from a

galina1969 [7]

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Calculate the mass of O2 produced if 3.450 g potassium chlorate is completely decomposed by heating in presence of a catalyst (m

sergiy2304 [10]

The reaction is:

2 KClO3(s) → 3 O2(g) + 2 KCl(s) 

A catalyst simply lowers the activation energy so MnO2 is not part of the overall reaction.

By stoichiometry:

3.45 g KClO3 x 1 mol/ 122.55g KClO3 x 3 mol O2/ 2 mol KClO3 x 31.99g/ 1 mol O2 = 331.096/ 245.1 = 1.35 grams O2 produced

Answer:
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A chemical factory is making soda ash (NA2CO3) from sodium bicarbonate. The production manager calculates they will make 80 tons

grigory [225]

Answer:

$\boxed{\text{ 93 \%}}$

Explanation:

$\text{\% yield} = \dfrac{\text{actual yield}}{\text {theoretical yield}} \times\text{100 \%}$

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$\begin{array}{rcr}\text{Actual yield} & = & \text{74.3 T}\\\text{Theoretical yield} & = & \text{80 T}\\\end{array}$

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$\text{\% yield} = \dfrac{\text{74.3 T}}{\text {80 T}} \times\text{100 \%} = \textbf{93 \%}}\\\\\text{The percent yield was } \boxed{\textbf{93 \%}}$

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Mendeleev left gaps in the periodic table because, in the future, he knew that there would be more elements to be discovered because not all elements were discovered at the time.

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