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464 Answered Questions for the topic AP chemistry

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?
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
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)

08/03/17

temperature conversion

A made up temperature, degrees X, has a relationship with degrees Celsius as follows. Tx=(Tc+10 degrees Celsius) (5 degrees X/ 14 degrees Celsius) The question is to convert 58 degrees X to Celsius
Ap Chemistry

08/02/17

Combustion of a 0.2000 gram sample of vitamin c (which contains c,h,and 0 Yield 0.2998 g of c02 and 0.0819 g of h20. calculate the empirical formula of vitamin

Combustion of a 0.2000 gram sample of vitamin c (which contains c,h,and 0 Yield 0.2998 g of c02 and 0.0819 g of h20. calculate the empirical formula of vitamin c ?  
Ap Chemistry

08/01/17

Find the percentage of water in copper sulfate pentahydrate ?

Find the percentage of water in copper sulfate pentahydrate ?  
Ap Chemistry

07/31/17

how many molecules of h20 are contained in 150.grams of water

how many molecules of h20 are contained in 150.grams of water
Ap Chemistry

07/31/17

how many moles of co2 are in 10.0 grams of co2

how many moles of co2 are in 10.0 grams of co2how many moles of co2 are in 10.0 grams of co2
Ap Chemistry

07/24/17

5. An empty 3.00 L bottle weighs 1.70 kg. Filled with wine it weighs 4.55 kg. The wine contains 11.0% ethyl alcohol by mass. How many ounces of ethyl alcoh

 An empty 3.00 L bottle weighs 1.70 kg. Filled with wine it weighs 4.55 kg. The wine contains 11.0% ethyl alcohol by mass. How many ounces of ethyl alcohol are present in a 400.0 mL glass of wine?... more
Ap Chemistry

07/18/17

A bug travels at the rate of 3.0 miles/hour. How fast is this in m/nsec? Hint: 2.54 cm = 1 inch and 1 mile = 5,280 feet

A bug travels at the rate of 3.0 miles/hour. How fast is this in m/nsec? Hint: 2.54 cm = 1 inch and 1 mile = 5,280 feet
Ap Chemistry

07/18/17

A cylinder has Diameter = 25.0 mm Calculate its density in g/cm3. Height = 59.0 cm Mass = 38.0 g

A cylinder has Diameter = 25.0 mm Calculate its density in g/cm3. Height = 59.0 cm Mass = 38.0 g
Ap Chemistry

07/18/17

A bug travels at the rate of 3.0 miles/hour

A bug travels at the rate of 3.0 miles/hour. How fast is this in m/nsec? Hint: 2.54 cm = 1 inch and 1 mile = 5,280 feet
Ap Chemistry

07/17/17

he diameter of metal wire is often referred to by its American wire gauge number.

The diameter of metal wire is often referred to by its American wire gauge number. A 16-gauge wire has a diameter of 0.05082 inches. What length of wire, in meters, is there in a 1.00 pound spool... more
Ap Chemistry

07/17/17

he diameter of metal wire is often referred to by its American wire gauge number. A 16-gauge wire has a diameter of 0.05082 inches

The diameter of metal wire is often referred to by its American wire gauge number. A 16-gauge wire has a diameter of 0.05082 inches. What length of wire, in meters, is there in a 1.00 pound spool... more
Ap Chemistry

07/17/17

Assume you had a silver sphere with a mass of 1.50 kg. Calculate the diameter of the sphere

Assume you had a silver sphere with a mass of 1.50 kg. Calculate the diameter of the sphere (in cm). The density of silver is 10.5 g/cm3. The formula for the volume of a sphere is . . . V = 4/3r3. 
Ap Chemistry

03/27/17

Which could be added to a solution of potassium fluoride to prepare a buffer? A) sodium hydroxide B) potassium acetate C) hydrochloric acid D) sodium fluoride

really struggling to understand why the answer is HCl when I though buffers were always weak acids and bases. How does adding HCl create a buffer. 
Ap Chemistry

01/25/17

What is the molar mass of Neon rounded to the nearest whole number

What is the molar mass of Neon rounded to the nearest whole number
Ap Chemistry

09/25/16

Writing Chemistry Formulas

1. Write the formula for tetraaquadichlorochromium(III)bromide.   2. Write the name of {Mo(NH3)Br3}NO3
Ap Chemistry

09/25/16

Chemistry Problem

A solution of 100.0 mL of 0.200 M KOH is mixed with a solution of 200.0 mL of 0.150 M NiSO4.(a) Write the balanced chemical equation for the reaction that occurs. (b) Identify the limiting... more
Ap Chemistry

09/25/16

AP Chemistry

Anexperiment calls for you to use 100 mL of 0.50 m hno3 solution. All you have is 3.6M HNO3. How would you prepare the desired solution?
Ap Chemistry

05/03/16

HHow much heat is needed to warm 115 grams of water from 26 degrees Celsius to 61 degrees Celsius

 don't know how to describe more
Ap Chemistry

04/19/16

how many moles of PbCl2 will dissolve in 1 liter of .2 M Pb(NO3)2

 I am working on a chemistry packet and this is one of the problems. I do not know where to start on how to do it or how to get an answer. 
Ap Chemistry

03/23/16

A one thousand liter sample of water contains one gram of iron (3) ions. What is the concentration of Fe3+(aq) in parts per million?

I know the answer is 1 but I do not know how. 
Ap Chemistry Chemistry Chemisty

03/07/16

Having major trouble with this... Question is down below please show work and answer thanks!

Question #1 In a titration 23.46 ml of 0.00325 M Ba(OH)2 neutralized 13.8 ml of HCL solution. What is the molarity of the HCl solution? Answer in units of M     Question #2  Find the molarity... more

03/04/16

Having trouble with these questions below... Please help show work and answer thanks!

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

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