3 years ago

- NO2 → __02 + _ N2 od What reaction type is this

Chemistry

1 answer:

Dafna1 [17]3 years ago

3 0

Answer:

Decomposition

Explanation:

2NO2 → 202 + N2

The compound on the left is breaking up into two separate elements.

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Answer:

24m/s

Explanation:

a=change of v/change of t

6m/s^2=v/4s

multiply both sides by 4s

v=24m/s

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3 years ago

How many grams of sodium nitrate. NaNO3, are soluble in 100

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Answer:

Your correct answer is D. 40 g

Explanation:

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The activation energy for a reaction is changed from 184 kJ/mol to 60.5 kJ/mol at 600. K by the introduction of a catalyst. If t

Ahat [919]

Answer:

The catalyzed reaction will take 1,41 s

Explanation:

The rate constant for a reaction is:

$k = A e^{-\frac{Ea}{RT}}$

Assuming frequency factor is the same for both reactions (with and without catalyst) it is possible to obtain:

${\frac{k1}{k2}} = e^{-\frac{Ea_{2}-Ea_{1}}{RT}}$

Replacing:

${\frac{k1}{k2}} = e^{-\frac{60,5kJ/mol-184kJ/mol}{8,314472x10^{-3}kJ/molK*600k}}$

${\frac{k1}{k2}} = 5,64x10^{10}$

That means the reaction occurs 5,64x10¹⁰ faster than the uncatalyzed reaction, that is 2537 years / 5,64x10¹⁰ = 4,50x10⁻⁸ years. In seconds:

4,50x10⁻⁸ years× $\frac{365days}{1year}$ × $\frac{24hours}{1day}$ × $\frac{3600s}{1hour}$ = 1,41 s

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