General Chemistry Answers

The donation of electron density through sigma (σ) bonds of a molecule is called the:

a.

steric effect

b.

inductive effect

c.

nucleophilic effect

d.

resonance effect

Consider the following molecule:

Which statement is INCORRECT?

a.

The molecule has (R)- configuration.

b.

With the lowest (fourth) priority facing away from the viewer, a curved arrow drawn from the first (highest) priority group through the second priority group to third priority group points in a counterclockwise direction.

c.

The molecule has (S)- configuration.

d.

The highest priority group is OH and the lowest priority group is H.

The absolute configuration of a chiral carbon is defined as R- or S- according to the Cahn-Ingold-Prelog rules. What is the CORRECT name for the following compound?

a.

(S)-3-methylheptane

b.

(R)-3-methylheptane

c.

(R)-2-ethylhexane

d.

(S)-2-ethylhexane

Write the electron configuration, noble gas configuration, and orbital diagram of the following elements.

1. phosphorus
2. chlorine
3. potassium

Identify the element given the set of quantum numbers of the last entering electron: 2, 0, 0, -1/2

Identify the element given the set of quantum numbers of the last entering electron: 2, 1, +1, -1/2

What is the complete set of quantum numbers for the last entering electron of Nickel, Xenon and Bromine?

A given mass of nitrogen is 0.12 dm³ at 60⁰C and 1.01×10⁵ Nm–². Find it's pressure at the same temperature if it's volume is changed to 0.24 dm³.

Nitrogen gas and hydrogen gas are combined in a reaction to produce ammonia. If 6.0 moles of N2 and 6.0 moles of H2 are present in the mixture, which is the limiting reactant? 

PLEASE SHOW WORK! THANKS!

9. Elements with very large ionization energies also tend to have highly exothermic electron affinities. Explain