Questions from General Chemistry

Q: Sketch a heating/cooling curve for water, starting out at

Sketch a heating/cooling curve for water, starting out at -20 °C and going up to 120 °C, applying heat to the sample at a constant rate. Mark on your sketch the portions of the curve that represent th...

Q: For Exercises 51–60 choose one of the following terms to

For Exercises 51–60 choose one of the following terms to match the definition or description given. a. alloy b. specific heat c. crystalline solid d. dipole–dipole attraction e. equilibrium vapor...

Q: Given the densities and conditions of ice, liquid water, and

Given the densities and conditions of ice, liquid water, and steam listed in Table 14.1, calculate the volume of 1.0 g of water under each of these circumstances. From table 14.1

Q: Which of the substances in each of the following sets would be

Which of the substances in each of the following sets would be expected to have the highest boiling point? Explain why. a. Ga, KBr, O2 b. Hg, NaCl, He c. H2, O2, H2O

Q: What are some physical properties that historically led chemists to classify various

What are some physical properties that historically led chemists to classify various substances as acids and bases?

Q: How do chemists recognize a system that has reached a state of

How do chemists recognize a system that has reached a state of chemical equilibrium? When writing chemical equations, how do we indicate reactions that come to a state of chemical equilibrium?

Q: For each hydrogen or hydroxide ion concentration listed, calculate the concentration

For each hydrogen or hydroxide ion concentration listed, calculate the concentration of the complementary ion and the pH and pOH of the solution. a. [H+] = 5.72 * 10-4 M b. [OH-] = 8.91 * 10-5 M c....

Q: Calculate [OH-] in each of the following solutions, and

Calculate [OH-] in each of the following solutions, and indicate whether the solution is acidic, basic, or neutral. a. [H+] = 4.21 * 10-7 M b. [H+] = 0.00035 M c. [H+] = 0.00000010 M d. [H+] = 9.9...

Q: You mix 225.0 mL of a 2.5 M

You mix 225.0 mL of a 2.5 M HCl solution with 150.0 mL of a 0.75 M HCl solution. What is the molarity of the final solution?

Q: Calculate the hydrogen ion concentration, in moles per liter, for

Calculate the hydrogen ion concentration, in moles per liter, for solutions with each of the following pH or pOH values. a. pOH = 0.90 b. pH = 0.90 c. pOH = 10.3 d. pH = 5.33