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3 years ago

Convert 23.92inHg to Pa.

Chemistry

2 answers:

andriy [413]3 years ago

5 0

Answer:

3189.07Pa

Explanation:

The conversion of 23.92mmH to Pa can be achieved in the following way:

760mmHg = 101325Pa

23.92mmHg = (23.92x101325)/760 = 3189.07Pa

Tju [1.3M]3 years ago

4 0

Answer:

$\large \boxed{8.100 \times 10^{4} \text{ Pa}}$

Explanation:

$\text{Pressure} = \text{23.92 inHg} \times \dfrac{\text{2.54 cmHg}}{\text{1 inHg}} \times \dfrac{\text{1 atm}}{\text{76 cmHg}} \times \dfrac{\text{101.325 kPa}}{\text{1 atm}} = \text{ 81.00 kPa}\\\text{The pressure is $\large \boxed{\mathbf{8.100 \times 10^{4}} \textbf{ Pa}}$}$

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3 years ago

A student reacts 5.0 g of sodium with 10.0 g of chlorine and collect 5.24 g of sodium chloride. What is the percent yield of thi

Ede4ka [16]

Answer: The percent yield of this combination reaction is 41.3 %

Explanation : Given,

Mass of $Na$ = 5.0 g

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First we have to calculate the moles of $Na$ and $Cl_2$ .

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$\text{Moles of }Na=\frac{5.0g}{23g/mol}=0.217mol$

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Now we have to calculate the limiting and excess reagent.

The balanced chemical equation will be:

$2Na+Cl_2\rightarrow 2NaCl$

From the balanced reaction we conclude that

As, 2 mole of $Na$ react with 1 mole of $Cl_2$

So, 0.217 moles of $Na$ react with $\frac{0.217}{2}=0.108$ moles of $Cl_2$

From this we conclude that, $Cl_2$ is an excess reagent because the given moles are greater than the required moles and $Na$ is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of $NaCl$