× 10-3 kg of urea is dissolved in 2 × 10-2 kg of water. The percentage by weight of urea is
A. 15%
B. 20%
C. 25%
D. 30%
Answer:B
× 10-3 kg of urea is dissolved in 2 × 10-2 kg of water. The percentage by weight of urea is
A. 15% B. 20% C. 25% D. 30%