Percent by volume is equal to the volume of the solute over the total volume of the solution times 100%. Therefore,
30 = volume of ethanol / 100 mL x 100
volume of ethanol = 30 mL
Hope this answers the question. Have a nice day.
For the answer to the question determine the total charge of the boron if t<span>he nucleus of one boron atom has 5 protons and 4 neutrons. The answer to this question is +5 for the charge of the boron.
I hope my answer helped you. Have a nice day!</span>
When Ph = -㏒[H+] and when we have [H+] represents by [H3O+]= 9.5x10^-9 M
as the Ph is equal the negative ㏒ of the concentration of H+ ions or H3O+ hydronium ions.
So, by substitution in Ph equation:
∴ Ph = -㏒(9.5x10^-9)
= 8.02
An isotope will lose neutrons in order to become more stable.
