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4 years ago

The elements helium and xenon are all part of the same

Chemistry

1 answer:

aliya0001 [1]4 years ago

3 0

They are both in the same family/group.

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Please help !!

ipn [44]

Answer:

For 2: The % yield of the product is 92.34 %

For 3: 12.208 L of carbon dioxide will be formed.

Explanation:

For 2:

The percent yield of a reaction is calculated by using an equation:

$\% \text{yield}=\frac{\text{Actual value}}{\text{Theoretical value}}\times 100$ ......(1)

Given values:

Actual value of the product = 78.4 g

Theoretical value of the product = 84.9 g

Plugging values in equation 1:

$\% \text{yield}=\frac{78.4 g}{84.9g}\times 100\\\\\% \text{yield}=92.34\%$

Hence, the % yield of the product is 92.34 %

For 3:

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ......(2)

Given mass of carbon dioxide = 24 g

Molar mass of carbon dioxide = 44 g/mol

Plugging values in equation 1:

$\text{Moles of carbon dioxide}=\frac{24g}{44g/mol}=0.545 mol$

At STP conditions:

1 mole of a gas occupies 22.4 L of volume

So, 0.545 moles of carbon dioxide will occupy = $\frac{22.4L}{1mol}\times 0.545mol=12.208L$ of volume

Hence, 12.208 L of carbon dioxide will be formed.

5 0

3 years ago

What is structure 3, and how does it help sustain life?

navik [9.2K]

Is there a name of their story babes ?

4 0

3 years ago

Four moles of iron metal react with three moles of oxygen gas to produce two moles of iron (III) oxide. What is the balanced equ

Eddi Din [679]

Answer:4 Fe + 3 O2 => 2 Fe2O3

Explanation: The number of atoms are now balanced.

3 0

3 years ago

The graph shows the amount of a gaseous product formed over time during two trials of a reaction. A different concentration of a

ss7ja [257]

Answer:

Trial 2, because the amount of product formed per unit time is higher.

Explanation:

Message me for extra help.

8 0

3 years ago

Read 2 more answers

Why does the moon barely move over time and how could this answer be helpful or useful to people?

Licemer1 [7]

Answer:

Because the moon is away from the rest of the planets and does not have gravity.

And it would be useful because, some people might not understand why or why not it does!

Explanation:

The moon is a far planet from the rest.

And does not have gravity.

(If I got something wrong, please tell me and I'll try it again!)

7 0

4 years ago

The elements helium and xenon are all part of the same ​

The elements helium and xenon are all part of the same