A mixture of 80.0 g of Cr2O3 and 8.00 g of C is used to produce elemental Cr by the reaction
Cr2O3 + 3C
2 Cr + 3 CO
a) What is the theoretical yield of Cr that can be obtained from the reaction mixture?
Cr2O3 (aq) + 3 C (s) - 2 Cr (s) + 3 CO (g)
b)which reactant is excess and how many grams are left over ?

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.