(06.01 LC) Based on the kinetic theory, which statement is true?

(08.05 MC) What is the pH of a solution with a 7.8 × 10−13 M hydronium ion concentration?

(06.04 HC) During a laboratory experiment, 44.18 grams of Al2O3 was formed when O2 reacted with aluminum metal at 290.0 K and 1.3 atm. What was the volume of O2 used during the experiment?3O2 + 4Al → 2Al2O3

(08.02 LC) Which of the following is the correct formula to calculate percent by mass?

(08.04 LC) Which statement is true about a base when it reacts with another substance?

(06.03 MC) Bella observes that the gas-filled tire of her bicycle becomes a little deflated when she keeps the bicycle outside in cold weather. Which of the following laws is used to understand the behavior of the gas and why?

(06.03 MC) The volume of a gas is 4.0 L, the pressure is 1 atm, and the temperature is 200 K. A chemist changes one factor while keeping another constant so that the new volume is 5.0 L. Which of the following could be the new conditions?

Solve the rational inequality and graph the solution set on a real number line. Express the solution set in interval notation.  ≤ 0

Answer each to the best of your ability.

While assessing auscultated spoken sounds, the auscultated sound is heard as “a-a-a” when the patient is asked to repeat “e-e-e.” This is indicative of: