3. How many moles are present in 4.20 x 10^26 molecules of water? (4 Points)
700 moles
0.7 moles
70 moles
25.2 moles

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

In 2002, the rare earth elements mine in mountain pass, california was closed because