Answer:
217.3ml
Step-by-step explanation:
In order to answer this question, we apply Charles' law, which states that at a constant pressure, the volume of a fixed mass of gas (V) is directly proportional to the temperature (T).
That is, V = KT
K = V/T
Hence, V1/T1 = V2/T2
Where; V1 = initial volume
V2 = final volume
T1 = initial temperature
T2 = final temperature
The unit of temperature must be in Kelvin (K), which is the unit for absolute temperature.
To convert Celsius (°C) to Kelvin (K), we use; K = C + 273
Hence, T1 = 273 + 20 = 293K
T2 = 273 + 10 = 283K
V1 = 225ml
V2 = ?
Using the formula; V1/T1 = V2/T2
225/293 = V2/283
We cross multipy;
293 × V2 = 283 × 225
293V2 = 63675
We divide both sides by 293
V2 = 63675/293
V2 = 217.32
Hence, the new volume (V2) is 217.3ml