1. When 50.0 mL of 0.30M HCI ( hydrochloric acid ) is added to 500 mg CaCO3 (calcium carbonate), will there be an excess of HCl(aq) or CaCO3(aq) or will there be
stoichiometric equivalents of the two? Show your
calculations.

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

hope it

and ur welcm

: )

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

i think its 5049.

i hope this !