The AU is used to measure distances where?

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

What type of context clue you understand the meaning of  quandary?

Which of the following is true about the products formed during photosynthesis? (5 points) select one: a. they have the same mass as the mass of reactants. b. they are the same set of compounds as the reactants. c. they have more mass than the mass of reactants. d. they are chemically the same as the reactants.