A gas occupies 500 mL at 20°C. If heated to 40°C (keeping pressure constant), it expands to 550 mL. By what percentage did the volume increase?
Answer
10 percent
How to solve it
1
Original: 500 mL
2
New: 550 mL
3
Increase: 550 - 500 = 50 mL
4
Percentage: (50 ÷ 500) × 100 = 10%
Hints
Find the increase amount
Divide by original and multiply by 100