Unless otherwise instructed, you may refer to the periodic table in the Chemistry: Problems and Solutions book for this question. Which group do calcium, magnesium, and strontium belong to?

halogens

alkali metals

alkaline earth metals

inner transition metals

Can someone me with questions 12 and 13 plz.

What is the standard unit of measure for acceleration?

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.