465 Answered Questions for the topic AP chemistry
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Question #1 If 23.67 mL of a solution of Ba(OH)2 requires 15.05 mL of a 1.082 M solution of HNO3 for complete titration, what is the molarity of Ba(OH)2 solution? answer in units of... more
The basic question I am asking is how does varying the initial concentrations of reactant(s) in a chemical reaction affect the equilibrium constant. What I have so far is: Using this basic... more
What mass of HgBr2 can be produced from the reaction of 5.00mL mercury (density= 13.6g/ml) and 5.00mL bromine (density= 3.10g/ml)?
Is Hg the limiting reactant?
Ap Chemistry Stoichiometry
42g of aluminum perchlorate are reacted with 75g of sodium thiocyanate. 1)What is the mass of the precipitate? 2)What are the espectator ions, and how many individual ions are there?
I really don't understand what this is asking... please help. 1.) As you move left to right across the period, there are two elements that instead show a decrease in ionization energy. Identify... more
The density of air at ordinary atmospheric pressure and 25 c is 1.19g/l. What is the mass in kg of the air in a room that measures 12.5 by 15.5 by 8.0 feet?
please help me solve this problem.
Percent Composition Problems
I need a brief example on how to solve Percent Composition probs please. Oh and btw how I can I tell when a compound is ionic or covalent ?
What is the pH of a buffer when 12 g of NaH2PO4 and 8.00 g of Na2HPO4 are diluted with water to a volume of 0.50 L? (Ka=6.2 x 10^-8)
AP Chemistry question
diffusion of gasses
I have a problem that I am working on, but I don't know the reason why the answer is what it is. Explanation please? The experimental apparatus represented above is used to demonstrate the... more
AP chem gases
Gas (A) Methane, (B) Ethane, (C) Propane, (D) Butane
how do you calculate lattice energy of an ionic compound
The question is "The lattice energies of FeCl3, FeCl2, and Fe2O3 are -2631,-5359, and -14,774 kJ/mol (in no particular order). Match the appropriate formula to the energy and explain. My question... more
how do you find the bonding orbitals in central atom?
We are doing molecular geometry and I don't understand how to figure it out
Chemistry lab question spectroscopy percent brass in copper
my lab: Percent Copper in Brass by using spectroscopyI have Copper(II) nitrate solution Copper(II) sulfate solution Iron(III) nitrate solution Iron(III) chloride solution Zinc nitrate... more