Question

A) What volume (mL) of 0.0821 M phosphoric acid can be neutralized with 151 mL of 0.34 M sodium hydroxide?

What volume (mL) of 0.0821 M phosphoric acid can be neutralized with 151 mL of 0.34 M sodium hydroxide?

12.6

1800

208

625

1880

B) A green laser pointer emits light with a wavelength of 537 nm. What is the frequency of this light?

C) Consider the following electron configurations to answer the question:

(i) 1s² 2s² 2p⁶ 3s¹
(ii) 1s² 2s² 2p⁶ 3s²
(iii) 1s² 2s² 2p⁶ 3s² 3p¹
(iv) 1s² 2s² 2p⁶ 3s² 3p⁴
(v) 1s² 2s² 2p⁶ 3s² 3p⁵

The electron configuration that belongs to the atom with the lowest second ionization energy is ________.

(i)

(ii)

(iii)

(iv)

(v)

D) As a general rule when the number of bonds between nuclei increase, what happens?

The net bond between nuclei grows longer and stronger.

The net bond between nuclei grows shorter and stronger.

The net bond between nuclei grows longer and weaker.

The net bond between nuclei grows shorter and weaker.

Answer 1