Which of the following is an organic compound? ammonia (NH3)
calcium sulfide (CaS)
octane (C8H18)
sulfur trioxide (SO3)

When the water vapor cools it condenses select a number that represents his process on the

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate