Magnesium has three common isotopes. The masses of the first two isotopes and percent abundances are as follows: 24.1687 amu, 78.900%
25.4830 amu, 10.009%

If the atomic mass of magnesium is 24.305 amu, what is the percent abundance of the
third isotope?
What is its atomic mass?

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]

What is the molar mass of ca(cio4)2