Thorium-236 has a half life of 10.0 minutes. If I have 250 grams of Thorium-236 , how many half lives will have taken place after 50.0 minutes?

If you want to create an electrical current, which situation would produce a solution capable of this

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.