Rank these fossil fuels on their cleanliness (cleanest to dirtiest). 1. coal 2. petroleum 3. natural gas
A) 3, 2, 1
B) 2, 3, 1
C) 1, 3, 2
D) 1, 2, 3
E) 3, 1, 2
Question 2
What is the most likely formula of the neutral, ionic compound formed by magnesium and oxygen?
A) Mg2O
B) MgO2
C) Mg3O2
D) MgO