Someone me with these two problems, the first one you got to change it into scientific notation, you so much!

What are the major products produced in the combustion of c10h22 under the following conditions? write balanced chemical equations for each. a. an excess of oxygen b. a slightly limited oxygen supply c. a very limited supply of oxygen d. the compound is burned in air

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: