Data:
V1 (initial volume) = 3 g/L
P1 (initial pressure) = 118 kPa
V2 (final volume) = ? (g/L)
P2 (final pressure) = 221 kPa
Formula:
P1 * V1 = P2 * V2
Solving:
P1 * V1 = P2 * V2
118 * 3 = 221 * V2
354 = 221 V2
221 V2 = 354
[tex] V_{2} = \frac{354}{221} [/tex]
[tex]\boxed{\boxed{V_{2} \approx 1.60\:g/L}}\end{array}}\qquad\quad\checkmark[/tex]