4.Aluminum reacts with oxygen gas to form aluminum oxide, as shown in the reaction below.
4Al(s) + 302(g) → 2Al2O3(s)
How many grams of aluminum are needed to
completely react with 192 g of oxygen gas?
A. 27.0 g B. 102 g C. 216g D. 432 g

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer