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

Question

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

Answer 1

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