A 0.3205 g sample of CaCO3 was dissolved in HCl and the resulting solution was diluted to 250.00 mL in a volumetric flask.
From this volumetric flask, 25.0 mL solution was obtained and titrated against EDTA. A 18.75 ml of EDTA was utilized to reach the end point (Eriochrome Black T used as
the indicator)
Calculate the moles of CaCO3 used:
Hint: Moles = g/MW Use 20ca40 6C12 and 8016

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

po-215 i got it right on the quiz