A student completes a titration by adding 25.0mL of NaOH of unknown concentration to 35.0mL of 0.25M HCl. What is the molar concentration of NaOH? If it takes 15 mL of 0.5M sodium hydroxide solution to neutralize 200 mL of Hydrochloric acid, what is the concentration of HCl?

THIS IS TIMED (please show work) WILL VOTE BRAINLIEST.

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.

that tool would be a compass

6.4 cm (max) - 25 cm (min)

a electronegativity decreases beacuse the size of nucleus is bigger.