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Standard VIII

Chemistry

Mixture

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Question

Show by means of calculation, that $5$ mole of $C O_{2}$ & $5$ moles of $H_{2} O$ don't have the same mass. How much is the difference in their masses?

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Solution

Mass of $5$ moles of $C O_{2}$ = $5 \times$ Molecular mass of $C O_{2}$
= $5 \times 44$
= $220 g$ $⟶ (i)$
Mass of $5$ moles of $H_{2} O$ = $5 \times$ Molecular mass of $H_{2} O$
= $5 \times 18$
= $90 g$ $⟶ (i i)$
From $e q^{n}$ (i) and (ii), we can conclude that they don't have the same mass.
Difference in their masses= $220 - 90$
$130$ $g r a m s$

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Similar questions

Q. Show by means of calculations that 5 moles of CO₂ and 5 moles of H₂O do not have the same mass. How much is the difference in their masses ?

Question 24
Verify by calculating that

(a) 5 moles of $C O_{2}$ and 5 moles of $H_{2} O$ do not have the same mass.

(b) 240 g calcium and 240 g magnesium elements have a mole ratio of 3:5.

Q. Statement 1: One mole of

C O_{2}

has a greater mass than

1

mole of

H_{2} O

.
Statement 2: The molecular mass of

C O_{2}

is greater than the molecular mass of

H_{2} O

Q. Which of the following statements is/ are correct?
I

5

moles of

C O_{2}

and

5

moles of

H_{2} O

have the same mass.
II

100 g

N H_{3}

has more atoms than that present in

100 g

N_{2}

.
III

16 g

of solid sulphur contains

3.76 \times 10^{22}

molecules/

5

moles of

B a (O H)_{2}

are treated with excess of

C O_{2}

. How much

B a C O_{3}

will be formed?

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Show by means of calculation, that 5 mole of CO2 & 5 moles of H2O don't have the same mass. How much is the difference in their masses?

Mass of 5 moles of CO2=5× Molecular mass of CO2=5×44=220g ⟶(i)Mass of 5 moles of H2O=5× Molecular mass of H2O=5×18=90g ⟶(ii)From eqn (i) and (ii), we can conclude that they don't have the same mass.Difference in their masses= 220−90130 grams

Show by means of calculation, that $5$ mole of $C O_{2}$ & $5$ moles of $H_{2} O$ don't have the same mass. How much is the difference in their masses?