All elements in a period have the same energy level due to which of the following reasons?
a. the same atomic number
b. the same number of neutrons
c. the same number of electrons
d. the same number of electron shells

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining

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