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3 years ago

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Równania reakcji chemicznej

1 answer:

Aliun [14]3 years ago

5 0

Answer:

Reakcja chemiczna jest opisana równaniem chemicznym, wyrażeniem określającym tożsamość i ilość substancji biorących udział w reakcji. Równanie chemiczne pokazuje początkowy związek (związki) - reagenty - po lewej stronie, a końcowy związek (związki) - produkty - po prawej stronie, oddzielone strzałką.

Explanation:

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Find the number of grams in 16.95 mol hydrogen peroxide (H2O2). Round your

Feliz [49]

Answer: There are 576.46 number of grams present in 16.95 mol hydrogen peroxide $(H_{2}O_{2})$ .

Explanation:

Number of moles is defined as the mass of substance divided by its molar mass.

The molar mass of $H_{2}O_{2}$ is 34.01 g/mol. Hence, mass of hydrogen peroxide present in 16.95 moles is calculated as follows.

$Moles = \frac{mass}{molarmass}\\16.95 mol = \frac{mass}{34.01 g/mol}\\mass = 576.46 g$

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3 0

3 years ago

Some gas was collected when the pressure was 760mmHg. It occupied 500mL when the pressure was increased to 800mmHg. What was the

Ivan

Answer:

<h3>The answer is 526.32 mL</h3>

Explanation:

To find the original volume we use the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the original volume

$V_1 = \frac{P_2V_2}{P_1} \\$

From the question we have

$V_1 = \frac{500 \times 800}{760} = \frac{400000}{760} = \frac{40000}{76} \\ = 526.315789...$

We have the final answer as

<h3>526.32 mL</h3>

Hope this helps you

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3 years ago