Question

substance having more number of moles is
1) 90 gms of water
2) 112 lit of hydrogen at S.T.P
3) 24 gm of helium gas
4) 3.01×10²⁴ molecules of Co2​

Answer 1

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Chemistry

Some Basic Concepts of Chemistry

Mole Concept and Molar Masses

Substance having maximum nu...

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Asked on December 30, 2019 by

Subhiksha Krish

Substance having maximum number of moles is:

MEDIUM

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VIDEO EXPLANATION

ANSWER

Number of moles in 90g of water =

18

90

=5 moles

112 L at STP contains

22.4

112

=5 moles.

24 g of helium gas contains =

4

24

=6 moles,

3.01×10

24

molecules of carbon dioxide corresponds to

6.02×10

23

3.01×10

24

=5 moles.

Hence, option C is the correct answer.

Answer 2

Answer:

Option 24 gm of helium gas is the correct option.

Explanation:

90 gms of H20 = 90/18 moles

112 litres of H = 112 /24 moles

24 gm of He = 24/4 moles

3.01 × 10²⁴ molecules = 3.01 × 10²⁴ / 6.022 ×10²³ moles .

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