Archive for the ‘Chemistry’ Category

 

Please help me with Chemistry. (Conversions)?

Saturday, February 20th, 2010
sears tower
Emma asked:


How do i do these?… Yes, this is homework.

7: The sears tower in chicago is 1454 ft. tall. Calculate the height in M and Cm. ( 1 inch = 2.54 cm exactly).

First do i do feet to inches?

10. The Vehicle Assembly building at the Kennedy Space Center in Florida has a volume of 3,666,500 m^3. Convert this to L andput your answer in Sci. notation.

14: The recommended adult does of Elixophyllin, a drug used to treat asthma, is 6 mg/kg of body mass.Caluculate the dose in milligrams for a 150-Ib person. (1 lb= 453.59 grams)

TY.

 

Chemistry Questions Please explain your answers so that I can understand in future. Thanks?

Saturday, July 4th, 2009
sears tower
Nika asked:


The Sears Tower in Chicago has an approximate floor area of 418,000 m². How may square feet of floor is this?

A six-pack of 12 oz soft drinks sells for $2.59, and a 2.0L bottle of the same soft drink sells for $1.59. What is the cost in dollars per liter for each?

Copper has a specific heat of 0.092 cal/(g • ?C). When 52.7 cal of heat is added to a piece of copper, the temperature increases from 22.4 ?C to 38.6 ?C. What is the mass of the piece of copper?

Assume that 50.0 cal of heat is applied to a 15g sample of sulfur at 20 ?C. What is the final temperature of the sample if the specific heat of sulfur is 0.175 cal/(g • ?C)?

When 100 cal of heat is applied to a 125g sample , the temperature increases by 28?C. Calculate the specific heat of the sample and compare your answer to the values in Table 2.6. What is the identity of the sample?

 

HELP QUICKLY PLEASE.CHEM?

Saturday, January 17th, 2009
sears tower
Kelly C asked:


by using the factor label method..how many moles of jellybeans can fit into the sears tower..if the mass of jelly beans is 3 and the area of the sears tower is 418,064 meters squared.

 

College Chemistry Help?

Friday, October 3rd, 2008
sears tower
T-Rev asked:


The Sears Tower in Chicago is 1454 ft tall. Calculate its height in meters.

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