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Chemistry
 Online Tutoring : Forum : Homework Help - Physical Sciences : Chemistry
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Nay07
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Joined: 22September2007
Posts: 1
Posted: 22September2007 at 2:54am | IP Logged Quote Nay07

Actually I have more than one question to ask.

1. A cylindrical rod formed from silicon is 14.1 cm in length and has a mass of 2.31 kg. The density of silicon is 2.33 g/cm3. What is the diameter of the cylinder?

2. The concentration of carbon monoxide in an urban apartment is 41 g/m3. What mass of carbon monoxide in grams is present in a room measuring 4 12 22 ft?

3. Solve the following simultaneous linear equations for the numerical values of x and y

3x + 7y = 5.0
-5x + 4y = 3.5

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