You wish to prepare 0.13 m hno3 from a stock solution of nitric acid that is 16.6 m. how many milliliters of the stock solution do you require to make up 1.00 l of 0.13 m hno3?

0.0078 L of the stock solution is required to make up 1.00 L of 0.13 M

Explanation:

According to laws of equivalence,

where, and are initial and final concentration respectively. and are initial and final volume respectively.

Here, , and

So,

or,

or,

Hence 0.0078 L of the stock solution is required to make up 1.00 L of 0.13 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.  

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.