Let's start with the calculations for each presentation:

### Presentation 1: 2.5mg in 2.5ml

1. Dose requirement:

10 \, \text{mg}

2. Volume requirement per dose using 2.5 mg vial:

10 \, \text{mg} \div 2.5 \, \text{mg/vial} = 4 \, \text{vials}

3. Morphine volume for the dose:

4 \times 2.5 \, \text{ml} = 10 \, \text{ml}

4. Volume of physiological solution:

100 \, \text{ml} - 10 \, \text{ml} = 90 \, \text{ml}

**Answers for Presentation 1:**
- Morphine volume:

10 \, \text{ml}

- Physiological solution volume:

90 \, \text{ml}

### Presentation 2: 50mg in 2ml

1. Dose requirement:

10 \, \text{mg}

2. Calculation of Morphine volume needed:

\frac{10 \, \text{mg}}{50 \, \text{mg}} \times 2 \, \text{ml} = 0.4 \, \text{ml}

3. Volume of physiological solution:

100 \, \text{ml} - 0.4 \, \text{ml} = 99.6 \, \text{ml}

**Answers for Presentation 2:**
- Morphine volume:

0.4 \, \text{ml}

- Physiological solution volume:

99.6 \, \text{ml}

### Presentation 3: 10mg in 10ml

1. Dose requirement:

10 \, \text{mg}

2. Morphine volume for the dose:

10 \, \text{ml}

3. Volume of physiological solution: No additional physiological solution needed

**Answers for Presentation 3:**
- Morphine volume:

10 \, \text{ml}

- Physiological solution volume:

90 \, \text{ml}

(to keep the total administration volume at

100 \, \text{ml}

)

Therefore, the calculations using the three different presentations of Morphine have shown the Morphine and physiological solution volumes required for each scenario.

\textbf{Final answers:}

- For Presentation 1: Morphine volume -

10 \, \text{ml}

, Physiological solution volume -

90 \, \text{ml}

- For Presentation 2: Morphine volume -

0.4 \, \text{ml}

, Physiological solution volume -

99.6 \, \text{ml}

- For Presentation 3: Morphine volume -

10 \, \text{ml}

, Physiological solution volume -

90 \, \text{ml}