What NaClNaCl concentration results when 259 mL259 mL of a 0.850 M0.850 M NaClNaCl solution is mixed with 567 mL567 mL of a 0.240 M0.240 M NaClNaCl solution?

0.431M

Explanation:

To find the concentration of NaCl we need to know how many moles comes from each solution. Then, we need to sum the total volume in liters and, as molarity (Unit of concentration) is the ratio between moles and volume we can determine concentration.

Moles from first solution:

259mL = 0.259L * (0.850mol / L) = 0.22015 moles of NaCl

Moles from second solution:

567mL = 0.567L * (0.240mol / L) = 0.13608 moles of NaCl

Total moles:

0.22015 + 0.13608 = 0.35623 moles of NaCl

Total volume:

259mL + 567mL = 826mL = 0.826L

Thus, molarity of the mixture is:

0.3562 moles NaCl / 0.826

0.431M

2b2t

explanation:

2b2t

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.