1.

Number of HC moleaules present in 10 mLd0.1Nsolution is:(1) 6.022 x1023(3) 6.022 x102143.(2) 6.023 x10246.022 x10

Answer»

4 is the correct option

Molarity = moles of solute/liters of solution

or, for our specific purpose here

moles of solute (HCl) = liters of solution * Molarity

10 ml = 0.01 liters

moles of solute (HCl) = (0.01 liters)*(0.1 M HCl)

= 0.001 moles of HCl

hence molecule=0.001*6.023*10^23=6.023*10^20



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