Robert S. answered • 05/14/21
PhD in Chemistry with industrial R&D and teaching experience
Hello, Shin,
These are all conversion problems. You can find the conversion equations/relationships in your textbook.
6. How many degrees in Fahrenheit is a freshly
cooked chicken if it has a Kelvin temperature of
500?
- Subtract 32 from the Fahrenheit temperature.
- Multiply this number by 5.
- Divide this number by 9.
- Add 273.15 to this number.
Fahrenheit to Kelvin: K = 5/9 (° F - 32) + 273
7. If the pressure in a container is half of the
standard atmospheric pressure, how much
kilopascals is it?
1 atm = 101,325 Pascals, so 1/2 atm would be half that number.
Make it kPa first, by dividing by 1,000.
1 atm = 101.325 kPa, now divide by 2 to get kPa for 1/2 atm
8. How much space in cubic meter does a gas in a
3-Liter container occupy?
1 m3 = 1 liter, by definition
3 liter = 3m3
9. How much mole is present in a 22.4 L container
full of gas?
We can't know how many moles we have unless we also know the conditions of temperature and pressure in the container. If the 22.4 L container were at 0 psi, there would be zero moles of gas. If we make the reasonable assumption that the container is at STP, then the calculation becomes easy. It is known that all gasses occupy 22.4 liters per mole of that gas at STP. So at STP we would have 1 mole of gas, any gas.
10. How much particles does a 22.4 L canister full of
gas contain?
Same initial response as above. Impossible to know uless we are at STP. A STP, a 22.4 liter container would have 1 mole of gas.
Bob
