(B) $(i)$ $5$ moles of $CO_{2} = 5 \text{ mol} \times \text{molar mass of } CO_{2}$$= 5 \text{ mol} \times 44 \text{ g/mol} = 220 \text{ g}$$(ii)$ $5$

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(B) $(i)$ $5$ moles of $CO_{2} = 5 \text{ mol} \times \text{molar mass of } CO_{2}$$= 5 \text{ mol} \times 44 \text{ g/mol} = 220 \text{ g}$$(ii)$ $5$ moles of $H_{2}O = 5 \text{ mol} \times \text{molar mass of } H_{2}O$$= 5 \text{ mol} \times 18 \text{ g/mol} = 90 \text{ g}$Thus,it can be seen that both have different masses.

Class 9 Science ATOMS AND MOLECULES Mix Example - ATOMS AND MOLECULES

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Do $5$ moles of $CO_{2}$ and $5$ moles of $H_{2}O$ have the same mass?

A
Yes,they have the same mass.
B
No,they have different masses.
C
Cannot be determined.
D
They have zero mass.

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ATOMS AND MOLECULES

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Mix Example - ATOMS AND MOLECULES

Which of the following species is electrically neutral and why?
$K^{+}, Cl^{-}, S^{2-}, P^{3-}, K$

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Name the international organization that approves the names of elements. Give an example with an explanation to show that the Law of Conservation of Mass applies to physical changes as well.

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Which of the following would weigh the highest?

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Which of the following statements is not true about an atom?

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The atomic numbers of three elements $A, B$ and $C$ are $9, 10$ and $13$ respectively. Which of them will form a cation?

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Do $5$ moles of $CO_{2}$ and $5$ moles of $H_{2}O$ have the same mass?

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Which of the following species is electrically neutral and why?$K^{+}, Cl^{-}, S^{2-}, P^{3-}, K$

Name the international organization that approves the names of elements. Give an example with an explanation to show that the Law of Conservation of Mass applies to physical changes as well.

Which of the following would weigh the highest?

Which of the following statements is not true about an atom?

The atomic numbers of three elements $A, B$ and $C$ are $9, 10$ and $13$ respectively. Which of them will form a cation?

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Which of the following species is electrically neutral and why?
$K^{+}, Cl^{-}, S^{2-}, P^{3-}, K$