Death Finds a Way: A Janie Riley Mystery by Lorine McGinnis Schulze. Janie Riley is an avid genealogist with a habit of stumbling on to dead bodies. She and her husband head to Salt Lake City Utah to research Janie's elusive 4th great-grandmother. But her search into the past leads her to a dark secret.
A: The most abundant isotope of magnesium has 12 neutrons; it is therefore, technically known as magnesium-24. Calculating the number of neutrons in an isotope of any element involves subtracting that element's atomic number from its atomic weight. Magnesium's number is 12, and its weight is just over 24.
The element magnesium (Mg) has three stable isotopes with the following masses and abundances. isotopes amu abundance 24Mg 23.9850 78.99% 25Mg 24.9858 10.00%... show more Calculate the average atomic mass (the atomic weight) of magnesium from these data. The element magnesium (Mg) has three stable isotopes with the following masses and abundances. isotopes amu abundance 24Mg 23.9850 78.99% 25Mg 24.9858 10.00% 26Mg 25.9826 11.01%. 1 following.