2AlBr3 + 3K2SO4 = 6KBr + Al2(SO4)3 If 19.84 grams of AlBr3 react with 3 mols of K2SO4, how many grams of KBr will be
produced?

What are the first three quantum numbers for the electrons located in subshell 2s?

May someone me with these science questions

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)