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465 Answered Questions for the topic AP chemistry

Ap Chemistry Math Science

10/19/17

Can you help me with this problem on root square mean?

According to kinetic-molecular theory, in which of the following gases will the root square mean speed of the molecules be the highest at 200°C?   A. SF6   B. H2O   C. Cl2   D. HCl   E. None more
Ap Chemistry Math Science

10/19/17

Can you help me with this AP Chemistry Stoichiometry problem?

What volume of sulfur dioxide can be produced by the complete reaction of 3.82g of calcium sulfite with excess HCl (aq) wheb the final SO2 pressure is 8.27 torr at 44°C
Ap Chemistry Math Science

10/19/17

Which 1.0 M aqueous solution would produce the most ions?

Which 1.0 M aqueous solution would produce the most ions?     A. HF   B. Li2CO3   C. Al(NO3)3   D. KOH      
Ap Chemistry Math Science

10/19/17

I am struggling with this problem on molarity

33.0 mL of aqueous 0.878M potassium oxide solution is mixed with a 25.0mL solution of 0.699M iron( III) nitrate, producing a precipitate.   How do I:   A. Write a balanced net equation for the... more
Ap Chemistry Math Science

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
Ap Chemistry Math Science

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
Ap Chemistry Chemistry Physics

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.
Ap Chemistry Math Science

10/19/17

In which compound does nitrogen have an oxidation number of +3?

A. NH3 B. NO3 C. NO2 D. N2O5
Ap Chemistry Math Chemistry

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?

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?
Ap Chemistry Science Chemistry

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?
Ap Chemistry Science Chemistry

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
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
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
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
Ap Chemistry Chemistry Physics

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
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.
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
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
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?

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
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
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
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.
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

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