Uranium-238 decays spontaneously to produce helium and thorium-234. Why is uranium considered an element rather than a chemical compound of helium and
thorium?

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion