What is the ratio of molecules in the chemical equation below N2+3N2-> 2NH3
4:2
2:2:1:3
1:3:2
2:1:2

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

If i add water to oil what will happen

Malia was able to make a paper clip float on the surface of water what will most likely happen to the paper clip if a drop of dishwashing detergent is added near it