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Which of the following correctly represe...

Which of the following correctly represents `360 g` of water?
(i) `2` moles of `H_(2)O`
(ii) `20` moles of water.
(iii) `6.022 xx 10^(23)` molecules of water.
(iv) `1.2044 xx 10^(25)` molecules of water.

A

(i)

B

(i) and (iv)

C

(ii) and (iii)

D

(ii) and (iv)

Text Solution

Verified by Experts

The correct Answer is:
D
(d) (ii) `("Mass of water")/("Molar mass of water")`
`=((360 g))/((18 g"mol"^(-1)))=20 ` mol
(iv) 18 g of water represent molecules
`=6.022xx10^(23)`
360 g of water represent molecules
`=((6.022xx10^(23)))/((18g)) xx(360g)`
`=6.022xx10^(23) xx20 =1.2044xx10^(25)`
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Knowledge Check

  • Which of the following correctly represent 360 g of water? I. 2 moles of H_(2)O II. 20 moles of water III. 6.022 xx 10^(23) molecules of water IV. 1.2044 xx 10^(25) molecules of water

    A
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  • Which of the following correctly represents 180 g of water ? 5 moles of water (ii) 10 moles of water (iii) 6.023xx10^23 molecules of water (iv) 6.023xx10^24 molecules of water

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    C
    (ii) and (iv)
    D
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  • Which of the following represents 180 g of water correctly ? I 5 moles of water II 10 moles of water III 6.023xx10^(23) molecules of water IV 6.023xx10^(24) molecules of water

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