Question

0.5 moles of h2so4 was taken in a beaker how many grams of h2so4does it contain how many molecule does it contain

Answer 1

1 mole of H2SO4 has 2 moles of Hydrogen atoms, 1 mole of Sulfur atoms and 4 moles of Oxygen atoms .

1: 1 = 0.5 : x

x = 0.50 moles

1 mole contains 6.022 x 10^23 atoms ( Avogadro's number)

1 : 6.022 x10^23 = 0.5 : x

x = 3.011 x 10^23 Hydrogen atoms

Answer 2

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Given that,
___________

=> No. Of moles = 0.5

=> molar wt. Of H2SO4 = 98 g

$= > no \: of \: \: moles \: = \frac{given \: wt \: }{moecular \: wt \: } \\ \\ = > 0 .5 = \frac{x}{98} \\ \\ = > x = 98 \times 0.5 \\ \\ = > x = 49g$

And

=> No. Of molecules = no. Of mol x mol. Wt.

=> no. Of molecules = 0.5 X 6.022 x 10 ^23

$= > no \: of \: molecules \: = 3.011 \times {10}^{23}$


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Thanks

Jai bajarang bali

@DrSM