100 ml of a 1 m hcl and 100 ml of a 5m nacl solution are mixed. what is the final molarity of the chloride ions?
a.) .5m
b.) 2m
c.) 3m
d.) 4m

3M

Explanation:

Because HCl and NaCl do not react with each other, the final number of the Cl⁻ ions is equal to the sum of the ions of each starting reagent:

Cl⁻ moles from HCl ⇒0.100 L * 1 M = 0.1 moles Cl⁻

Cl⁻ moles from HCl ⇒0.100 L * 5 M = 0.5 moles Cl⁻

We add up the volumes from each solution:

And finally calculate the final molarity of Cl⁻ ions:

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.