2Be + O2 = 2BeO
a. How many moles of BeO are made by 52.1 grams of Be?

b. How many grams of O2 will make 3.78 moles of BeO?

c. 245 grams of Be combine with how many moles of O2?

4. Equation: 4 Fe + 3 O2 = 2 Fe2O3
a. How many moles of iron will combine with 2.50 moles of oxygen O2?

b. How many moles of Fe2O3 is produced by 3.01 moles of oxygen O2?

c. 7.61 moles of iron will produce how many grams of Fe2O3?

d. 1650 grams of iron will produce how many moles of Fe2O3?

4. Equation: 4 Li + O2 = 2 Li2O
a. How many moles of lithium combine with 2.95 moles of oxygen O2?
b. How many moles of Li2O are produced from 13.5 moles of lithium?
c. 4.17 moles of oxygen O2 will produce how many grams of Li2O?
d. 5.28 grams of lithium will produce how many moles of Li2O?

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.