Which of the following is a valid mole ratio from the balanced equation 2Fe2O3 + 3C - 4Fe + 3CO2? 2 mol Fe,
O
4 mol Fe
4 mol C
3 mol Fe
2 mol Fe, o,
4 mol C
3 mol C
4 mol CO2

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

What are the similarities between compounds and mixtures?