3 years ago

How do catalysts increase the rate of a chemical reaction?

Chemistry

1 answer:

kramer3 years ago

4 0

They lower the activation energy.

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mezya [45]

I believe it’s the last option

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Assume a gasoline is isooctane, which has a density of 0.692 g/ml. What is the mass of 3.8 gal of the gasoline (1 gal = 3.78 l)?

sveticcg [70]

Density is the ratio of mass to the volume.

The mathematical expression is given as:

$density=\frac{mass}{volume}$

Now, density of isooctane = $0.692 g/mL$

Volume = $3.8 gal$

Since, 1 gallon = 3.78 L

So, 3.8 gal = $3.78 L\times 3.8$

= $14.364 L$

As, 1 L = 1000 mL

Therefore, $14.364 L$ = $14.364 L\times 1000 mL$

Volume in mL = $14364 mL$

Put the values,

$0.692 g/mL=\frac{mass}{14364 mL}$

$m = 0.692 g/mL\times 14364 mL$

= $9939.888 g$

Hence, mass of 3.8 gal of the gasoline is $9939.888 g$ .

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2 years ago

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guapka [62]

The primary colors are blue, red, and yellow.

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2 years ago

Iodine would have chemical properties most like?

mrs_skeptik [129]

manganese (Mn)
.tellurium (Te)
.chlorine (Cl).
xenon (Xe).

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2 years ago

!!20 Points!!

elena-14-01-66 [18.8K]

Answer:Tungsten changes oxidation numbers +6 to zero

Undergoes reduction

Explanation:

did it!

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