Number of molecules in 0.49 g of H2SO4 is ______ × 10^21.

Number of molecules in 0.49 g of H₂SO₄ is ______ × 10²¹.

MCQ

रिकाम्या जागा भरा

Number of molecules in 0.49 g of H₂SO₄ is 3.01 × 10²¹.

Explanation:

Moles of H₂SO₄ = `0.49/98` = 0.005

Number of molecules = 0.005 × 6.022 × 10²³

= 3.011 × 10²¹

shaalaa.com

As per the Lakhmir Singh textbook, the question is written (“number of atoms”), the answer should be 21.08 × 10²¹, which is not among the options.

Therefore, if the textbook gives (d) 3.01, it is actually calculating the number of H₂SO₄ molecules, not the total number of atoms.

या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?

पाठ 5: Mole Concept and Stoichiometry - Intext Question [पृष्ठ १०१]

पाठ 5 Mole Concept and Stoichiometry
Intext Question | Q 3. (iii) | पृष्ठ १०१