Question

No. Of H atoms in 294 g of sulphuric acid

Answer 1

Sorry I mistakenly wrote 298 instead of 294 grams so replace the 298 g in the solution with 294 and calculate you'd get the answer, if not comment and I will provide the solution once more.
Happy Learning

Answer 2

$\huge\green{As-Salamu-Alykum}$


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$\huge\purple{Equation:-}$



H2SO4-----------------> H+ +HSO4_



1 mole H2SO4 forms 1 mole Hydrogen atom



Mass of H2SO4 = 294g



Molar mass of H2SO4 = 1×2 + 32 + 16×4



Molar mass of H2SO4 = 34 + 64



Molar mass of H2SO4 = 98 g/mol



Moles of H2SO4 =mass /molar mass



Moles of H2SO4 = 294/98



Moles of H2SO4 =3mol



So 3 mole will produce 3 mole hydrogen atom



1mole = 6.023×10^23



So 3 mole hydrogen atom = 3×6.023×10^23



Number of hydrogen atoms = 18.069 ×10^23



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$\huge\pink{INSHALLAH it will help U}$