Question

find the mass of H2so4 present in hundred centimetre cube (100cm3) of a decimolar solution​

Answer 1

Answer:0.98 g

Explanation:molecular mass of sulphuric acid -- 98

Vol =100cm3

0.1 l

Using Molarity relation

M=no.of moles / vol.

No. Of moles = given mass / molar mass

Apply all the aove given no. We get 0.98 g

Answer 2

Given - Volume and molarity

Find - Mass

Solution - Molarity = number of moles/volume of solution in litres

As per the known fact, 1 cm³ = 0.001 litres

Volume in litres = 0.1 litres

Keep the values in formula to find the number of moles.

1/10 = number of moles/0.1

Number of moles = 0.1/10

Performing division

Number of moles = 0.01

Number of moles = mass/molar mass

Molar mass of H2SO4 = 98 g/mol

Mass = 0.01*98

Performing multiplication

Mass = 0.98

Hence, the mass of H2SO4 is 0.98 grams.