4. An electronic balance has a sensitivity requirement of 3.2 mg. Using lactose as the diluent, explain how you would weigh 8 mg of digoxin with an error not >5%. 5. A prescription balance has a sensitivity requirement of 6.5 mg. Explain how you would weigh 20 mg of a substance with an error not >2%.

4. An electronic balance has a sensitivity requirement of 3.2 mg. Using lactose as the diluent, explain how you would weigh 8 mg of digoxin with an error not >5%. 5. A prescription balance has a sensitivity requirement of 6.5 mg. Explain how you would weigh 20 mg of a substance with an error not >2%.