What is Charles’s law?, Chemistry Final Help
Name:Date:

Graded Assignment

Semester Test, Part 2

Answer the questions below. When you have finished, submit this assignment to your teacher by the due date for full credit.

(5 points)

Score
  1. What is Charles’s law?
  • State the definition of the law in words.
  • What are the assumptions of Charles’s law?
  • Write mathematical equations that represent the law.
  • What can be calculated with Charles’s law?
  • Using a gas-filled balloon as an example, describe what happens to the gas molecules that behave according to Charles’s law.

Answer:

(5 points)

Score
  1. Draw a structural formula for 3,4-hexene (C6H12), which has a double bond between the number 3 and 4 carbons in the chain. What class of compound is it, and what feature distinguishes it as that class?

Answer:

(5 points)

Score
  1. Besides the major types of radioactive decay, there are two others: positron emission and electron capture.
  • Compare and contrast positrons with electrons.
  • Explain how positron emission works and how it causes transmutations.
  • Explain how electron capture works and how it causes transmutations.
  • Compare the transmutations caused by positron emissions and electron capture.

Answer:

Score

(5 points)

  1. A calorimeter contains 500 g of water at 25°C. You place a hand warmer containing 200 g of liquid sodium acetate inside the calorimeter. When the sodium acetate finishes crystallizing, the temperature of the water inside the calorimeter is 39.4°C. The specific heat of water is 4.18 J/g-°C. What is the enthalpy of fusion (Hf) of the sodium acetate? (Show your work.) Where necessary, use q = mHf.

Answer:

(5 points)

Score
  1. Consider the dissociation of acetic acid in water at equilibrium:

CH3COOH CH3COO + H+

You start with 0.05 moles of acetic acid in 500 mL of water. At equilibrium, the pH of the solution is 2.873. What is the equilibrium constant of this reaction? Hint: You will need to calculate an antilog using a scientific calculator.

Answer:

Your Score___ of 25
Order a unique copy of this paper
(550 words)

Approximate price: $22