A chemist must prepare of aqueous iron(II) bromide working solution. He'll do this by pouring out some aqueous iron(II) bromide stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in of the iron(II) bromide stock solution that the chemist should pour out. Round your answer to significant digits.

Find the empirical formula of each of the following compounds. given mass or for each element in a sample of the compound 3,611 g ca; 6.389 g c1

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)

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2