Question

4 chemistry math problems help please

Answer 1

a. A bike tire has a pressure of 3.2 atm at 300 K. What would the pressure be if the temperature
were lowered to 250 K?

b. A balloon has a volume of 18.6 L at sea level (1 atm). As you walk down a valley, the pressure changes to 0.854 atm. How does this affect the volume of the balloon?

c. The internal conditions for a half drank water bottle are measured to be 18OC and 1.2 atm. How would the pressure change if the temperature were lowered to -3OC.

calculate the pressure of this system: 0.00325 moles, 16OC, and 1.7 L.

Answer 2

For (A), use Amonton's Law:
\[\frac{ P_{1} }{ T_{1} }=\frac{ P_{2} }{ T_{2} }\]

For (B), use Boyles' Law:
\[P_{1}V_{1}=P_{2}V_{2}\]

For (C), use Amonton's Law again - just be sure to convert temperatures to Kelvin!

For (D), use the ideal gas law - but remember that for the gas constant, R, your units must match what you use for your other variables!
\[PV=nRT\]