4 On a bright, sunny day, which time of day can

be predicted to create the shortest shadows?

F 9:00 A. M.

H 3:00 P. M.

G 12:00 P. M. J 12:00 A. M.

The reaction below can be catalyzed by bromine (Br2). if you carried out such a reaction, which compound would you expect to find in the reaction container at the end of the reaction? A) Br2 B) BrO C) BrH2 D) BrO2

Write an isotope notation for an element has an atomic number of 1 and a mass number of 3.

How high will an ice cube float in different temperatures of water and why?

What is centrifugation? Which substance is separated by this method?

Why is it important that scientific knowledge changes?

What are small round structures in the cell that breaks down large food particles into smaller ones

A balloon has a volume of 2.5 L and contains 0.100 moles of Helium. Another balloon has a volume of 5.0 L. They are at the same temperature and pressure. How many moles of gas does the second balloon contain?

Why is it important to that the solid be dry before the final mass measurement?

What is 0.00055030 in Scientific form?

What happened to the rate of the forward reaction and the rate of the reverse reaction as time progresses. Describe the rates when the reacion reaches equilibrum.