Question

1. if the teaspoon is not available to administer 15 ml, how many tablespoonfuls should the child receive? 23. a child weighs 22 kg. how many pounds does the child weigh? 24. how many kg is a 220 lb male? 25. a physician orders 30 mg of codeine. how many grains is this?

Explanation:

Question 22

Step1: Recall unit conversion (tsp to tbsp, mL)

We know that 1 teaspoon ($\text{tsp}$) = 5 mL and 1 tablespoon ($\text{tbsp}$) = 15 mL (or 3 tsp). We need to find tbsp for 15 mL.
Since 1 tbsp = 15 mL, so for 15 mL, the number of tbsp is $\frac{15\ \text{mL}}{15\ \text{mL/tbsp}}$.

Step2: Calculate

$\frac{15}{15} = 1$

Step1: Recall kg to lb conversion

The conversion factor is 1 kg = 2.20462 lb (commonly approximated as 2.2 lb for simplicity). So to convert kg to lb, multiply by 2.2.
For a 22 kg child, weight in lb is $22\ \text{kg} \times 2.2\ \text{lb/kg}$.

Step2: Calculate

$22 \times 2.2 = 48.4$

Step1: Recall lb to kg conversion

The conversion factor is 1 kg = 2.20462 lb, so to convert lb to kg, divide by 2.2 (or 2.20462). For a 220 lb male, weight in kg is $\frac{220\ \text{lb}}{2.2\ \text{lb/kg}}$.

Step2: Calculate

$\frac{220}{2.2} = 100$

Answer:

1 tablespoonful

Question 23