What is the process called that involves separating the minerals/elements from the ore?

What is the weight in grams of 1 mole of ammonium sulfate (NH4) 2SO4?

Which of the following gives the correct possible values of l for n=4? 0,1,2,3 -4,-3,-2,-1,0,1,2,3,4 0,1,2,3,4

Which is true of weak acids and bases? They partially dissociate in water They dissociate completely in water They are unable to react with water They lose all their properties when in water

Which laboratory test result can be used to determine if KCl (s) is an electrolyte? (1) pH of KCl (aq) (2) pH of KCl (s) (3) electrical conductivity of KCl (aq) (4) electrical conductivity of KCl (s)

Which contains the particles that are vibrating fastest? a) boiling water b) frozen water c) room-temperature water d) cold tap water

The electron configuration 1s22s22p63s23p6 represents which noble gas?

What are some disadvantages of incinerators?

What mass of potassium chlorate would contain 40grams of oxygen?

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) zero.

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)