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Can you help me guys solve these problems in my Chemistry lesson?

Hi Wyzanters! I'm having a hard time to solve these questions. It's for my chemistry and I don't have any idea on how to solve for Celsius, Farenheit and Kelvin temperature. It's a conversion and can you help me solve these? Can you provide a detailed explanation on how to solve these? Thank you so much! :)

1. 15 kg to g
2. 90º F to K
3. 32° C to °F
4. 32° C to K
7/11/2014 | Paige from Williamston, NC

1 Answer by Expert Tutors

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Alexander F. | Patient and Passionate University of South Florida Math/Science TutorPatient and Passionate University of Sou...
1
Check Marked as Best Answer
Hello Paige!
 
1. This is a metric conversion for mass. The prefix kilo means 1000 so a kg is 1000 g. If we keep in mind the units, we can convert:
 
15kg * (1000g/1kg) = 15000g
 
2. To convert Farenheit to Kelvin, we first need to convert farenheit into celsius using the following equation:
 
C = 5/9 (F - 32)
 
If we plug in F = 90:
 
C = 5/9 (90-32) = 32.22 degrees C
 
Then we can always add 273.15 to any celsius temperature to convert it to Kelvin:
 
32.22 + 273.15 = 305. 37 K
 
3. Going from celsius to farenheit involves solving the previous equation for F:
 
F = (9/5)C + 32
 
F = (9/5)*(32) + 32 
 
F = 89.6 degrees F
 
4. This is probably the easiest conversion! We did this in already, we just need to add 273.15 to go from celsius to kelvin:
 
32 + 273.15 = 305.15 K
7/11/2014 | Alexander F.

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