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3 years ago

How many molecules are present in 5.45 moles of NO? Use the space below to show your work.

Chemistry

2 answers:

ivann1987 [24]3 years ago

4 0

Answer:

Explanation below:)

Explanation:

5.45 mol NO(6.022*10^23 molecules/mol) = 3.18 *10^24 molecules NO

Good Luck!! :)

tatiyna3 years ago

3 0

Answer:

3.18*10^24 molecules

Explanation:

Since 1 mole of any substance consists of 6.022 × 10²³ molecules, simply do

$\frac{5.45 Moles}{1}*\frac{6.022*10^23 molecules}{1 mole}$ =3.18199*10^24 molecules.

However, remember to include sig figs (3) and round it to 3.18*10^24 molecules

Hope this helps :)

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2 years ago

The activation energy of a certain uncatalyzed reaction is 64 kJ/mol. In the presence of a catalyst, the Ea is 55 kJ/mol. How ma

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Explanation:

Hello,

In this case, since the Arrhenius equation is considered for both the catalyzed reaction (1) and the uncatalized reaction (2), one determines the relationship between them as follows:

$\frac{k_1}{k_2}=\frac{Aexp(-\frac{Ea_1}{RT} )}{Aexp(-\frac{Ea_2}{RT})} \\\frac{k_1}{k_2}=\frac{exp(-\frac{Ea_1}{RT} )}{exp(-\frac{Ea_2}{RT})}$

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Such result means that the catalyzed reaction is about five times faster than the uncatalyzed reaction.

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3 years ago

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