How many moles of zinc are produced when 2 moles of hydrogen react in the given reaction?
Zn + 2HCI——>ZnCl2 + H2

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

The sum of the oxidation numbers in a neutral compound is always