Answer:
190.2 grams
Explanation:
each arrow points to the amount it weighs, just add it all up
Answer:
107.5 amu
Explanation:
isotopes: fractional Wt Avg
isotopes: isotopic mass %Abundance abundance (amu)
X110 110 60 0.60 66.0
X105 105 30 0.30 31.5
<u> X100 100 10 0.10 10.0</u>
∑ atm mass contributions = 107.5 amu*
*amu = atomic mass units
Well first of all, we know that the atomic mass of magnesium is 26 due to the fact that it is stated. We can then go to the periodic table and find the atomic number of magnesium, which is 12. We then subtract, 26 - 12 = 14.
Protons - 12
Neutrons - 14