What type of energy transformation occurs in a campfire? 1.light energy to mechanical energy
2.thermal energy to light energy
3.mechanical energy to chemical energy
4.chemical energy to light and thermal energy

The excretory system, need answers for all: )

What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)