Erm, I think when they are little. When they are just born.
F. because electronegativity generally increases as you move from left to right across a periodic table, and F is farther right than O
Answer:
D) Adding a catalyst
Explanation:
Adding a catalyst decreases activation energy and allows the reaction to occur more easily.
Answer:
One atom lf helium has a mass of 4 u
Know that 1 u =1.66. 10-24g
