Chemistry: What is the pressure in a 19.1 L cylinder filled with 0.684 mol of nitrogen gas at a temperature of 326 K ?

What is the pressure in a 19.1 L cylinder filled

Ответ:

missmychiefrkt0

26.08.2021

Chemistry

The hydrogen sample has a pressure of 0.957 atmospheres.

Explanation:

Let consider that the hydrogen sample behaves ideally, the equation of state for ideal gases is:

$P\cdot V = n\cdot R_{u}\cdot T$ (1)

Where:

- Pressure, in atmospheres.

- Volume, in liters.

- Molar quantity, in moles.

- Temperature, in Kelvin.

$R_{u}$ - Ideal gas constant, in atmosphere-liters per mole-Kelvin.

If we know that $V = 19.1\,L$ , $n = 0.684\,mol$ , $T = 326\,K$ and $R_{u} = 0.082\,\frac{atm\cdot L}{mol\cdot K}$ , then the pressure of the hydrogen sample is:

$P = \frac{n\cdot R_{u}\cdot T}{V}$

$P = \frac{(0.684\,mol)\cdot \left(0.082\,\frac{atm\cdot L}{mol\cdot K} \right)\cdot (326\,K)}{19.1\,L}$

$P = 0.957\,atm$

The hydrogen sample has a pressure of 0.957 atmospheres.

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Ответ:

darlenelandaverde

21.01.2021

Chemistry

Several extractions is more effective than a single extraction.

Explanation:

When extraction is carried out multiple times, for instance, in this case, the extraction was carried out with three portions of the solvent rather than with just a single portion of the solvent, the amount of material left in the residue will be lower, because the extraction is more complete.

Several extractions with smaller volumes of solvent are more effective than a single extraction with a large volume of solvent.

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What is the pressure in a 19.1 L cylinder filled with 0.684 mol of nitrogen gas at a temperature of 326 K ?

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