Naturally occurring strontium consists of four isotopes, Sr-84, Sr-86, Sr-87 and Sr-88. Below the data concerning strontium:
Sr-84 83.913 amu ,0.56%
Sr-86 85.909amu ,9.86%
Sr-87 86.909amu ,7.00%
Sr-88 ? ?

Based on the above information and the average atomic mass of Strontium, what is the mass a percent abundance of Strontium-88?

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.