Honors Chemistry Review


Suppose a 24.3 mL sample of gaseous He at 25 degrees Celsius and 1.01 atm is heated to 50 degrees Celsius and compressed to a volume of 15.2 mL. What will be the new pressure? .....

Category Chemistry

chemistry for a lab question


What safety, environmental, and economic considerations would be important to a company manufacturing 1 million pounds of aspirin each year by this procedure .....

Category Chemistry

Calculate the concentration of CO2 in a 0.145 M solution of H2CO3.


I've calculated all the rest of the values just need help with this one. CO2?3] Express your answer to two significant figures and include the appropriate units .....

Category Chemistry

Chemistry 101 & 102


Find a quantity of any product in the English system that you are used to using: a quart of milk, a gallon of gasoline, etc, and derive a detailed conversion to any analogous metric unit. For example, convert gallons to liters. Next, convert the price of that product from dollars per (English unit) to dollars per (metric unit). The purpose is to get familiar with the process of how we convert units – and to become familiar with the units of the metric system. Note: Please convert units in the metric system to the US system or visa versa. I would like to see you show the conversion using dimensional analysis. .....

Category Chemistry

ocher hw problem


Can someone help me out with whats wrong with the second problem (the one marked with an X) ------------------------- ATTACHMENTS * __ SCREEN SHOT 2017-03-21 AT 3.24.48 PM.PNG [/download?f=177882&q=450853&csrf=592b965db9d48] .....

Category Chemistry

what chemicals are in a fire extinguisher and what causes them to put out fires


10 page Term paper, need atleast 4 sources.MLA format draft is due 4/2 so I'll need it to be around half way done by then. NOOO Plagarisim!!!! pictures can be added but dont count toward page count. For the sources (very strict teacher on sources):they must be level appropriate,should be mostly primary sources, include recent developments, and be extremely careful to diverge from the coverage of any speific source. .....

Category Chemistry

College level general chemistry.


I need to finish this to turn in a few hours. I have filled in the spots of some questions I know the answer to. I need the other questions to be completed. ------------------------- ATTACHMENTS * __ CHEM LAB 2.DOCX [/download?f=175761&q=450157&csrf=592b946f8d150] .....

Category Chemistry

An oxide of chromium crystallizes with the following unit cell


An oxide of chromium crystallizes with the following unit cell (chromium = gray; oxygen = red). What is the formula of the oxide? ------------------------- ATTACHMENTS * __ CHROMIUM OXIDE.JPG [/download?f=175507&q=450046&csrf=592b941f82386] .....

Category Chemistry

Calculate the mass percent of salicylic acid in the recovered sample.


A student performed the Separation by Fractional Crystallization experiment described with the following results: Initial mass of sample mixture: 10.95g, mass of salicylic acid recovered, 2.76g; mass of CuSO4•5H2O recovered, 4.95g. The recovered CuSO4•5H2O was then heated for 20 minutes at 120°C. The mass of the new hydrate was 3.61g. (The molar mass of H2O = 18.015 g/mol, and the molar mass of CuSO4= 159.61g/mol) Calculate the mass percent of salicylic acid in the recovered sample. .....

Category Chemistry

Sodium fluoride is added to many municpal water supplies to reduce tooth decay. Calculate the pH of a 0.00339 M solution


Sodium fluoride is added to many municpal water supplies to reduce tooth decay. Calculate the pH of a 0.00339 M solution .....

Category Chemistry

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