10. A 38.0-g sample of NaOH is dissolved in water, and the solution is diluted to give a final volume of 1.70 L. The molarity of the final solution is

a. 22.3 M.
b, 0.558 M
c 0.95 M
d. 0.0447 M
e. 0.619 M

B.0.558M

Explanation:

M=n/L

n=m/Mm

Mm=NaOH

=23+16+1

=40g/mol

n=m/Mm

= 38/40

=0.95

M=n/L

=0.95/1.70

=0.558

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.