Exact mass=24.9858, 25.9826, 23.9850.
Percentage abundance= 10.00, 11.01, 78.99
Calculate the atomic mass of magnesium.
2006-10-13 05:21:40 · 6 answers · asked by lamide e 1 in Science & Mathematics ➔ Chemistry
24.9858 x 10.00 = 249.8580
25.9826 x 11.01 = 286.0684
23.9850 x 78.99 = 1894.5752
then 1894.5752 + 286.0684 + 249.8580 = 2430.5016
then 2430.5016 / 100 = 24.3050 amu
So relative atomic mass of Mg is 24.3050 amu
Hope that helps!
2006-10-14 04:58:37 · answer #1 · answered by drjaycat 5 · 0⤊ 0⤋
As previously stated:
24.9858 x 0.10 = 2.49858
25.9826 x 0.1101 = 2.86068
23.9850 x 78.99 = 18.94575
Summate:
2.49858 + 2.86068 + 18.94575 = 24.30502
2006-10-13 05:46:00 · answer #2 · answered by Anonymous · 1⤊ 0⤋
(23.985)(0.7899)=18.94575 (24.986)(0.1000)=2.4986 (25.983)(0.1101)=2.86073 18.94575 + 2.4986 + 2.86073= 24.30508 Round to four sig figs = 24.31 amu
2016-03-28 07:41:53 · answer #3 · answered by ? 4 · 0⤊ 0⤋
multiply the %age (ie 0.1, 0.1101 etc) with the mass and add.
2006-10-13 05:27:44 · answer #4 · answered by doctor ross 2 · 0⤊ 0⤋
Do you feel very intelligent now?
2006-10-13 05:30:25 · answer #5 · answered by chickadee 4 · 0⤊ 1⤋
why? ... can you drink it?
2006-10-13 05:33:28 · answer #6 · answered by pooonmywellies 2 · 0⤊ 0⤋