A 54.0 mL aliquot of a 1.60 M solution is diluted to a total volume of 218 mL. A 109 mL portion of that solution is diluted by adding 161 mL of water. What is the final concentration? Assume the volumes are additive g

The final concentration is 0.16 M.

Explanation:

According to the dilution law:

where,

= molarity of stock solution = 1.60 M

= volume of stock  solution = 54.0 ml

= molarity of diluted solution = ?

= volume of diluted solution = 218 ml

Putting these values:

Now 109 ml of this diluted solution is further diluted by adding 161 mL of water.

Again applying dilution law:

Thus the final concentration is 0.16 M

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

the answers would be

the first one and the second one