Chem homework

Overview

Please complete the following assignment and submit it at canvas as pdf,doc,docx, jpeg and jpg file.

Use an orbital diagram to describe the electron configuration of the valence shell of each of the following atoms: Pt-10

1. N
2. Si
3. Fe
4. Te

Answer the following questions:

1. Without using quantum numbers, describe the differences between the shells, subshells, and orbitals of an atom.
2. How do the quantum numbers of the shells, subshells, and orbitals of an atom differ? Pt-5

Identify the subshell in which electrons with the following quantum numbers are found: Pt-3

1. n = 2, l = 1
2. n = 4, l = 2
3. n = 6, l = 0

Identify the subshell in which electrons with the following quantum numbers are found: Pt-3

1. n = 3, l = 2
2. n = 1, l = 0
3. n = 4, l = 3

• A young man exerted a force of 9,000 N on a stalled car but was unable to move it. How much work was done?

Pt-3

• What quantity of heat is liberated by a reaction that produces 50.0 g of SO2 in the
  following reaction?
  2 NiS(s) + 3 O₂(g) ⟶2 NiO + 2 SO₂(g) ΔH⁰= -936.2 kJ

Pt-5

• The temperature of a 35.2 g sample of iron increases from 23.7 °C to 29.5 °C. If the specific heat of iron is 0.450 J/g-K, how many joules of heat are absorbed?

Pt-3

• Observe the following reactions carefully:

H₂(g) + F₂(g) ⟶ 2HF(g) ∆H = –537 kJ

C(s) + 2 F₂(g) ⟶ CF₄(g) ∆H = –680 kJ

2 C(s) + 2 H₂(g) ⟶ C₂H₄(g) ∆H = +52.3 kJ

Calculate the ∆H for the reaction of C₂H₄(g) with F₂(g) to make CF₄(g) and HF(g)

Pt-5