Sulphur molecule exists as $S_{8}$ . How many moles of sulphur are present in $25.6$ grams of sulphur?

0.01

moles

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0.1

moles

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0.02

moles

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0.2

moles

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Solution

The correct option is A $0.1$ moles
$25.6$ grams $S_{8}$ ${g i v e n}$
Molar mass $= 32 \times 8 = 256 g$
Moles $= \frac{W e i g h t i n g r a m s}{M o l a r m a s s}$
$= \frac{25.6}{256}$
$= 0.1 m o l e s$

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S_{8}

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Sulphur molecule exists as S8. How many moles of sulphur are present in 25.6 grams of sulphur?

The correct option is A 0.1 moles25.6 grams S8 {given}Molar mass =32×8=256gMoles =WeightingramsMolarmass=25.6256=0.1moles

Sulphur molecule exists as $S_{8}$ . How many moles of sulphur are present in $25.6$ grams of sulphur?

The correct option is A $0.1$ moles
$25.6$ grams $S_{8}$ ${g i v e n}$
Molar mass $= 32 \times 8 = 256 g$
Moles $= \frac{W e i g h t i n g r a m s}{M o l a r m a s s}$
$= \frac{25.6}{256}$
$= 0.1 m o l e s$