From the choices below, select the element that has 2 valence electrons, more than 30 neutrons but less than 70 neutrons. *
strontium (SI)
barium (Ba)
calcium (Ca)
rubidium (RD)

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

Consider the equilibrium system: 2icl(s) ⇄ i2(s) + cl2(g) which of the following changes will increase the total amount of of cl2 that can be produced? all of the listed answers are correct decreasing the volume of the container removing the cl2 as it is formed adding more icl(s) removing some of the i2(s)

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.