638 Answered Questions for the topic AP chemistry

Ap Chemistry Math Science Chemistry

10/19/17

Can you help me with this problem about salts?
Consider five unlabled bottles of the following salts: AgCl, BaCl2, NaCl, CoCl2, and HCl. Identify the compound that can be distinguished by adding 1.0 M Na2SO4 to each of the samples. Please... more
Follows • 2
Expert Answers •1
Ap Chemistry Math Science Chemistry

10/19/17

Can you help me with this AP Chemistry problem on reactions and cations? Thanks.
An unknown solution is tested as follows: NaCl is added and no precipitate is formed K2SO4 is added and no precipitate is formed.   Which of these cations might be present in the solution:   A.... more
Follows • 2
Expert Answers •1

10/19/17

Can you please help me identify this unknown soloution?
An unknown solution is tested as follows:   NaCl is added and no precipitate is formed   K2SO4 is added and no precipitate is formed.   Identify the unknown substance.
Follows • 2
Expert Answers •1
Ap Chemistry Math Science Chemistry

10/19/17

In which compound does nitrogen have an oxidation number of +3?
A. NH3 B. NO3 C. NO2 D. N2O5
Follows • 2
Expert Answers •1
Ap Chemistry Math Chemistry Physics

10/19/17

Question about Molarity. Please help me, Urgent.
How much water should be added to 10.0 mL of 6.00M HCl to prepare a 0.500M HCL solution?
Follows • 2
Expert Answers •1

10/19/17

Chemical Reaction and Precipitate Problem
Which substance, Na2S, NaOH, K2SO4, or KI (all 1.0M) will form a black precipitate when allowed to react with 1.0M aqueous Pb (NO3) 2?
Follows • 2
Expert Answers •1
Ap Chemistry Science Chemistry Physics

10/15/17

Can you help me with this Grahm's Law AP Chemistry Problem?
The rate of effusion of a particular gas is 24.0 L/min. Under the same conditions, the rate of effusion of CH4 is 47.8 L/min. What is the molar mass of the unknown gas?
Follows • 2
Expert Answers •1
Ap Chemistry Science Chemistry Physics

10/15/17

Consider two separate 1.0 L gaseous samples of H2 and O2. How can the samples have the same average velocity at STP?
Can you please help me with this problem?   Thanks
Follows • 3
Expert Answers •2
Ap Chemistry Chemistry Physics

10/11/17

Can you help me with this problem on group 2A metal reaction
The oxides of the Group 2A metals (symbolized by M) react with carbon dioxide in the following reaction   MO(s)+CO2(g) = MCO3   A 2.85 g sample containing only MgO and CuO is placed in a 3.00L... more
Follows • 2
Expert Answers •1
Ap Chemistry Physics College Chemistry

10/11/17

Can you help me with this AP Chem problem? thanks
Hydrogen azide decompose on heating by the following unbalanced equationHN3=N2(g)+H2(g)If 3.0 atm of pure HN3 is decomposed initally, what is the final total pressure of the container?What are the... more
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

10/10/17

The partial pressure of CH4 is 0.175 atm
A. If the partial pressure of oxygen is 0.250 atm, what is the mole fraction of each gas in the mixture?   B. If the mixture occupies a volume of 10.5L at 65°C how many moles of gas are in the... more
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry Physics Gas Laws

10/10/17

Can you help me with this AP Chemistry gas laws problem?
Consider two flasks, the first flask has 2.00L of hydrogen at a pressure of 475 torr, the second has 1.00 L of nitrogen at a pressure of 0.200 atm. If the stopcock between the two flasks is opened... more
Follows • 2
Expert Answers •1
Ap Chemistry

10/08/17

describing electrolyte behaviors
Describe the electrolytic behavior in water for these compounds A) CaCl2  B) Fe(NO3)3  C) I2  D) HC2H3O2. And describe the primary species that exist in solution.
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

10/01/17

Write the balanced net ionic equation for the reaction that takes place between potassium permanganate and hydrogen peroxide in an acidic solution
Write the balanced net ionic equation for the reaction that takes place between potassium permanganate and hydrogen peroxide in an acidic solution
Follows • 2
Expert Answers •1
Ap Chemistry Science Chemistry

09/25/17

Chemistry Problem
Hydrogen and chlorine each have two naturally occurring isotopes: 1H (1.0078 amu; 99.985% abundance) and 2H (2.01410 amu; 0.015% abundance); 35Cl (34.969 amu; 75.53% abundance) and 37Cl (36.966... more
Follows • 2
Expert Answers •1
Ap Chemistry Chemistry

09/07/17

Types of chemical reactions and solution stoichiometry
What mass of Na2CrO4 is required to precipitate all of the silver ions from 75.0 mL of a 0.100-M solution of AgNO3?
Follows • 2
Expert Answers •1

09/02/17

butane in a limited amount of oxygen
A 30cm3 sample of butane, C4H10, was completely reacted in a limited supply of oxygen to produce 60 cm3 of carbon dioxide and 60 cm3 of carbon monoxide.All volumes were measured at room temperature... more
Follows • 2
Expert Answers •1
Ap Chemistry

08/25/17

Lead metal can be extracted from a mineral called galena, which contains 86.6% lead by mass. A particular ore contains 68.5% galena by mass. Part A If the lead
Lead metal can be extracted from a mineral called galena, which contains 86.6% lead by mass. A particular ore contains 68.5% galena by mass.Part AIf the lead can be extracted with 92.5% efficiency,... more
Follows • 1
Expert Answers •1
Ap Chemistry

08/11/17

im having a hard time with this question can someone help me?
A Wilton High School senior was applying to college and wondered how many applications she needed to send. Her counselor explained that with the excellent grade she received in chemistry she would... more
Follows • 2
Expert Answers •2
Ap Chemistry

08/09/17

If 150.0 grams of Fe2O3 reacts with excess CO, 87.9 grams of Fe is produced. Calculate the % yield.
If 150.0 grams of Fe2O3 reacts with excess CO, 87.9 grams of Fe is produced. Calculate the % yield.
Follows • 1
Expert Answers •1
Ap Chemistry

08/03/17

Example: A 2.00 gram piece of zinc is placed in 2.50 grams of aqueous silver nitrate. a) Write the balanced equation. b) Determine the limiting reagent. c) H
Example: A 2.00 gram piece of zinc is placed in 2.50 grams of aqueous silver nitrate. a) Write the balanced equation.b) Determine the limiting reagent.c) How many grams of silver will be formed?d)... more
Follows • 2
Expert Answers •1
Ap Chemistry

08/03/17

1 box of cake mix 1 egg 2 cups of flour 1/2 cup of sugar 3 tablespoons of water Assume that you had 1 dozen eggs, 6 boxes of cake mix, 10 cups of flour
1 box of cake mix 1 egg 2 cups of flour 1/2 cup of sugar 3 tablespoons of waterAssume that you had 1 dozen eggs, 6 boxes of cake mix, 10 cups of flour, 10 cups of sugar, one quart of oil, and an... more
Follows • 2
Expert Answers •1
Ap Chemistry

08/03/17

How many grams of O2 can be prepared from the decomposition of 4.50 grams of potassium chlorate?
How many grams of O2 can be prepared from the decomposition of 4.50 grams of potassium chlorate?
Follows • 2
Expert Answers •1
Ap Chemistry

08/03/17

When solutions of potassium iodide and lead (II) nitrate are combined, the products are potassium nitrate and lead (II) iodide.
d. Write a balanced equation for this reaction, including (aq) and (s). e.  Calculate the mass of precipitate produced when 50ml of .45M potassium iodide solution and 75ml of .55M lead (II)... more
Follows • 2
Expert Answers •1
Ap Chemistry

08/03/17

A compound is found to contain 16.66 grams of carbon and 3.49 grams of hydrogen. a. Find the empirical formula. (C2H5) b. The molar mass is 87. Find
A compound is found to contain 16.66 grams of carbon and 3.49 grams of hydrogen. a. Find the empirical formula. (C2H5) b. The molar mass is 87. Find the molecular formula: (C6H15)
Follows • 2
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.