Using the periodic table, choose the more reactive metal.

ca or ra

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).

Abike ride event is 30 miles. a first aid tent is put at the 3/4 mark of the course. how many miles from the starting point is the first aid tent?