Question

A sample of 20 adults was asked to report the number of hours they spent on the internet the previous week. The results are listed here. 1,7,12,5,33,14,8,1,7,2,8,8,9,4,2,10,9,22,15,17​

Answer 1

Answer:

Correct option is

A

0.2 M

Given,

8g of NaOH dissolved in one litre of solution.

Molar Mass(NaOH)=40

Molarity=

V(mL)

n

B

×1000

=

40

8

×

1000

1000

=0.2

∴ M=0.2 moles/litre