Answer:
10mL
Explanation:
When working with gas laws, the temperature is always in Kelvins. To get Kelvins from a Celsius temperature, add 273.15 to the Celsius temperature.
Given:
P1 = 760 mmHg
V1 = 10mL
T1 = 27°C + 273.15 = 300 K
P2 = 750 mmHg
T2 = 15°C + 273.15 = 288 K
Missing:
V2 = ?
Solution:
Rearrange the equation to isolate V2. Substitute the known values into the equation and solve.
P1V1/T1 = P2V2/T2
V2 = P1V1T2/T1P2
= 760mmHg × 10mL × 288 K/300 K × 750mmHg
V2 = 2,188,800 mL / 225,000
V2 = 9.7 or 10mL
