What must molecules do to react?

a. molecules must heat up
b. molecules must collide
c. molecules must expand to fill their container
d. molecules must interact with a catalyst

The modern periodic table has groups.

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) → co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)