Question

Answer the following questions: How many molecules are there in 49 g of H2SO4?​

Answer 1

Answer:

0.5 mol of H2SO4 contains 0.5 x 6.022 x 10^23 molecules. = 3.011 x 10^23 molecules . that is 49 g of H2SO4 contains 3.011 x 10^23 molecules of H2SO4.

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Answer 2

Answer:

Molar mass of H2SO4 = 98g

Hence ,

98 grams of H2SO4 = 1 mole

49 grams of H2SO4 = 0.5 moles ( divide both side by 2 )

Hence , number of molecules = number of molecules in 0.5 moles

$number \: of \: molecules \: = (6.022 \times {10}^{23} ) \div 2 = 3.011 \times {10}^{23}$