Write a balanced molecular equation (photo)

Ba + 2HCl = BaCl₂ + H₂

Explanation:

The equation for Magnesiunm's reaction with hydrochloric acid is

Mg + 2HCl = MgCl₂ + H₂

So, just replace magnesium in the equation above and you get the equation for barium's reaction with hydrochloric acid.

c is the answer because when something is left after something evaporates that shows the chemical change.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.