Before we can analyze the alum crystal it is necessary to remove any impurities or
uncrystallized ions that may be present in the
sample. Alcohol must be used because alum
is water soluble.

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

What is the relationship of air masses and the temperature of oceans?

Write the balanced equation for a reaction between aqueous nitric acid (hno3) and solid lithium metal (this is a single replacement reaction)