638 Answered Questions for the topic AP chemistry

Ap Chemistry Chemistry Chem Ap Chem

04/01/21

4. Magnesium is the limiting reactant in this experiment. Calculate the theoretical yield of MgO for each trial
Data Trial 1 Trial 2 Mass of empty crucible with lid 26.687g 26.696g Mass of Mg metal, crucible, and lid 27.105g 27.014g Mass of MgO, crucible, and lid  27.374g 27.218g Mass of Mg for each... more
Follows • 1
Expert Answers •1

03/30/21

CHEMISTRY LIMITING REACTANT
The following data was collected when a reaction was performed experimentally in the laboratory. Reactants Products Al(NO3)3 NaCl NaNO3 AlCl3 Starting Amount in Reaction 4 moles 9... more
Follows • 1
Expert Answers •1

03/29/21

Assign oxidation states to bromine
Assign oxidation states to bromine in the following compounds: HBr HOBr Br2 BrF3
Follows • 1
Expert Answers •2
Ap Chemistry Chemistry

03/20/21

Chemistry: BCA chemical reactions

Make a BCA table using the chemical reaction below and determine how many molecules of H2Oand O2 would be formed from 2.5x1022 molecules of H2O2.2 H2O2(g) → 2 H2O(g) + O2(g)Calculate the mass of O2... more
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

03/18/21

Chemistry: Chemical reactions
Which of the following unbalanced chemical reactions are correctly matched with their reaction types? I. N2(g) + H2(g) → NH3(g): Combination Reaction II. H2O2(l) → H2O(l) + O2(g): Decomposition... more
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry

03/18/21

Chemistry: polyatomic Ions
Which polyatomic ion forms a neutral compound when combined with an alkali metal in a 1:1 ratio? I. Ammonium II. Peroxide III. Cyanide IV. Hydrogen phosphate
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry Ap Chem

03/18/21

Chemistry: solubility rules
According to the solubility rules, which of the following ionic compounds would form a precipitate if produced in a chemical reaction in water and why? I. NaCl II. MgCO3 III. LiOH IV. BaSO4
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry

03/16/21

Use Hess’ Law to determine the overall enthalpy change of each of the following (underlined) processes.
Use Hess’ Law to determine the overall enthalpy change of each of the following (underlined) processes.CS2(l)+3O2(g) --> CO2(g)+2SO2(g) H = ??? kj–––––––––––––––––––––––––––––––––C(s)+O2(g)... more
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry

03/16/21

For the Reaction: NaCl (aq) + AgNO3 (aq) → NaNO3 (s) + AgCl(s) 
For the Reaction: NaCl (aq) + AgNO3 (aq) → NaNO3 (s) + AgCl(s) a. Will the reaction occur spontaneously at room temperature?b. Do you predict that the reaction will be endothermic or exothermic?... more
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

03/16/21

How is it possible that every energy transformation increases the entropy of the Universe, even though they don’t all increase the entropy of the system in which they occur?
How is it possible that every energy transformation increases the entropy of the Universe, even though they don’t all increase the entropy of the system in which they occur?
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry

03/14/21

Most of human society is powered by the oxidation of hydrocarbons (ex. Octane {C8H18}-- a principal component of gasoline) in combustion reactions.
Most of human society is powered by the oxidation of hydrocarbons (ex. Octane {C8H18}-- a principal component of gasoline) in combustion reactions.a) In terms of matter spread and energy spread,... more
Follows • 1
Expert Answers •1
Ap Chemistry

03/14/21

How do you estimate the density of sodium based on the structure and radius?

Sodium metal (atomic weight 22.99 ) adopts a body-centered cubic structure with a density of 0.97 .The atomic radius of Na has been determined to be 1.9 ÅIf it didn't react so vigorously, sodium... more
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry

03/13/21

If 40.0 grams of catalyst are used to speed up a reaction involving 30.0 g of reactant, how many grams of catalyst should be left when the reaction is complete?
If 40.0 grams of catalyst are used to speed up a reaction involving 30.0 g of reactant, how many gramsof catalyst should be left when the reaction is complete?
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

03/09/21

In an electrolysis cell how many seconds are required to plate out 2.50 g of copper metal from a solution of CuSO4 that is electrolyzed using a current of 3.00 amps?
In an electrolysis cell how many seconds are required to plate out 2.50 g of copper metal from a solution of CuSO4 that is electrolyzed using a current of 3.00 amps?
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

03/06/21

chemistry questions about exothermic or endothermic reaction

A reaction started with 100kJ of potential energy in its reactants, then decreased to 20 kJ of potential energy. Is this an exothermic or endothermic reaction? Explain in terms of changes to... more
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

03/06/21

Calculate the molarity of each ion present in each of the following solutions. 0.0020 Ca(OH)2 0.103 M Na3PO4
Calculate the molarity of each ion present in each of the following solutions.0.0020 Ca(OH)20.103 M Na3PO4
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry

03/06/21

Calculate the molarity of each ion present in each of the following solutions. 0.25 M AlCl3 0.375 M Na2CrO4
Calculate the molarity of each ion present in each of the following solutions.0.25 M AlCl30.375 M Na2CrO4
Follows • 1
Expert Answers •1
Ap Chemistry

03/05/21

The solubility of Ce(IO3) in a 0.20 M solution of KIO3 is 4.4 x10-8 M. Calculate the Ksp for Ce(IO3)3.
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry

03/04/21

chemistry question about PE & forward reaction cont.
Given the following information about a forward reaction:Heat of reactants is 100kJHeat of products is 20kJHeat of activated complex is 150 kJActivation energy for the uncatalyzed reaction is... more
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

03/04/21

chemistry question about PE & forward reaction
Given the following information about a forward reaction:Heat of reactants is 100kJHeat of products is 20kJHeat of activated complex is 150 kJActivation energy for the uncatalyzed reaction is... more
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

03/03/21

C (g) + O2 (g) → CO2 (g)  ΔH = -393.5 kJ How much energy is involved when 88.0 grams of CO2 is synthesized?
C (g) + O2 (g) → CO2 (g)  ΔH = -393.5 kJHow much energy is involved when 88.0 grams of CO2 is synthesized?
Follows • 1
Expert Answers •1
Ap Chemistry Chemistry

02/27/21

Complete the reaction equation & explain: Co + F2
Complete the reaction equation & explain: Co + F2
Follows • 2
Expert Answers •1

02/24/21

Concentration of sulfuric acid after neutralization
Write the balanced neutralization reaction that occurs between H2SO4 and in KOH aqueous solution. Phases are optional.Suppose 0.250 L of 0.500 M of H2SO4 is mixed with 0.200 L of 0.240 M KOH. What... more
Follows • 1
Expert Answers •1
Ap Chemistry Science Chemistry

02/20/21

copper (II) nitrogen (chemical equation help please!!!)
how do you write copper (II) nitrogen as a chemical equation? thanks!
Follows • 3
Expert Answers •1
Ap Chemistry Science Chemistry

02/20/21

copper (II) chloride (chemical formula help!)
How do you write copper (II) chloride as a chemical formula?
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.