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2 years ago

A cylinder of nitrogen gas (N2) weighs 550 grams. How many moles of nitrogen are present in the cylinder?

2 answers:

5 0

Molar mass N2 = 14 x 2 => 28.0 g/mol

1 mole N2 ------------- 28.0 g
? moles N2 ----------- 550 g

550 x 1 / 28.0 => 19.64 moles of N2

Charra [1.4K]2 years ago

4 0

Answer:

Moles of nitrogen present in the cylinder = 19.64 mol

Explanation:

Given:

Weight of $N_2$ = 550 g

Formula for the calculation of moles is:

$mol=\frac{Weight\ in\ g}{Molecular\ mass}$

Molecular mass of $N_2$ = 28 g/mol

$mol=\frac{550\ g}{28\ g/mol} = 19.64\ mol$

Moles of nitrogen present in the cylinder = 19.64 mol

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Answer:

The forward reaction is occurring at a faster rate than the reverse reaction.

Explanation:

Reaction quotient (Q) of the given reaction is -

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Here $[N_{2}]$ = 0.80 M, $[O_{2}]$ = 0.050 M and [NO] = 0.10 M

So, $Q=\frac{(0.10)^{2}}{(0.80)\times (0.050)}=2$

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2 years ago

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Answer:

C. Precipitate the crystals as fast as possible

Explanation:

C. Precipitate the crystals as fast as possible

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3 years ago

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Answer:

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