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AP Chemistry Practice Questions

The following diagram shows the relative atomic sizes of three different elements from the same period. Which of the following statements must be true?
A sealed, rigid container contains three gases: 28.0 g of nitrogen, 40.0 g of argon, and 36.0 g of water vapor. If the total pressure exerted by the gases is 2.0 atm, what is the partial pressure of the nitrogen?
A sample of liquid NH3 is brought to its boiling point. Which of the following occurs during the boiling process?
Correctly identify the anode and cathode in this reaction as well as where oxidation and reduction are taking place.
How many moles of electrons must be transferred to create 127 g of copper?
If the Cu+ + e- ? Cu(s) half reaction has a standard reduction potential of +0.52 V, what is the standard reduction potential for the Zn2+ + 2e- ? Zn(s) half reaction?
As the reaction progresses, what will happen to the overall voltage of the cell?
What will happen in the salt bridge as the reaction progresses?
For a reaction involving nitrogen monoxide inside a sealed flask, the value for the reaction quotient (Q) was found to be 1.1 × 102 at a given point. If, after this point, the amount of NO gas in the flask increased, which reaction is most likely taking place in the flask?
Which of the following substances has an asymmetrical molecular structure?
Nitrogen's electronegativity value is between those of phosphorus and oxygen. Which of the following correctly describes the relationship between the three values?
A sample of a compound known to consist of only carbon, hydrogen, and oxygen is found to have a total mass of 29.05 g. If the mass of the carbon is 18.02 g and the mass of the hydrogen is 3.03 g, what is the empirical formula of the compound?
In addition to OH-, what species are present in the solution during section III of the graph?
What is the magnitude of the first dissociation constant?
If the concentration of the sodium hydroxide is increased prior to repeating the titration, what effect, if any, would that have on the graph?
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