18. What coefficients can be used to balance the following equation? (2 points) K2CO3 + FeCl3 -> KCI + Fez (CO3)3
2, 2, 4, 1
O 3, 2, 6, 1
O 1, 1, 2,1
O 3, 3, 6, 1

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles

One nanometer is equal to how many meters?