Solve this other chemistry paper 111 Ijmb question for me

To prepare $1 \text{ dm}^3$ ($1000 \text{ cm}^3$) of $0.10 \text{ mol dm}^{-3}$ $\text{HNO}_3$ solution, we first need to find the molarity of concentrated $\text{HNO}_3$.
Assuming concentrated $\text{HNO}_3$ is $68\%$ w/w with a density of $1.42 \text{ g/cm}^3$ and molar mass of $\text{HNO}_3$ is $63.01 \text{ g/mol}$:

Using the dilution formula $C_1V_1 = C_2V_2$:

• Carefully measure out $\mathbf{6.52 \text{ cm}^3}$ of concentrated $\text{HNO}_3$ using a measuring cylinder or pipette.
• Pour about $500 \text{ cm}^3$ of distilled water into a $1 \text{ dm}^3$ volumetric flask.
• Slowly add the measured concentrated $\text{HNO}_3$ to the water in the volumetric flask, swirling gently. (Always add acid to water).
• Add more distilled water until the solution is just below the calibration mark.
• Stopper the flask and invert several times to mix.
• Add distilled water dropwise until the bottom of the meniscus aligns with the $1 \text{ dm}^3$ calibration mark.
• Stopper and invert the flask several times to ensure thorough mixing.
• Label the solution as Solution D ($0.10 \text{ mol dm}^{-3}$ $\text{HNO}_3$). This stock solution can then be dispensed in $200 \text{ cm}^3$ portions to each student.

Q1 (b): Prepare $0.04 \text{ mole dm}^{-3}$ of $\text{Na}_2\text{CO}_3 \cdot 10\text{H}_2\text{O}$ as solution E.

To prepare $1 \text{ dm}^3$ ($1000 \text{ cm}^3$) of $0.04 \text{ mol dm}^{-3}$ $\text{Na}_2\text{CO}_3 \cdot 10\text{H}_2\text{O}$ solution.
Molar mass of $\text{Na}_2\text{CO}_3 \cdot 10\text{H}_2\text{O}$:
$(2 \times 22.99) + 12.01 + (3 \times 16.00) + (10 \times (2 \times 1.008 + 16.00)) = 286.15 \text{ g/mol}$.
Mass needed = Molarity $\times$ Volume $\times$ Molar mass

• Weigh out $\mathbf{11.45 \text{ g}}$ of $\text{Na}_2\text{CO}_3 \cdot 10\text{H}_2\text{O}$ accurately using a digital balance.
• Transfer the weighed solid into a beaker and dissolve it in about $200 \text{ cm}^3$ of distilled water. Stir to ensure complete dissolution.
• Carefully transfer the solution into a $1 \text{ dm}^3$ volumetric flask using a funnel.
• Rinse the beaker and funnel with small portions of distilled water and add the rinsings to the volumetric flask to ensure all solute is transferred.
• Add distilled water until the solution is just below the calibration mark.
• Stopper the flask and invert several times to mix.
• Add distilled water dropwise until the bottom of the meniscus aligns with the $1 \text{ dm}^3$ calibration mark.
• Stopper and invert the flask several times to ensure thorough mixing.
• Label the solution as Solution E ($0.04 \text{ mol dm}^{-3}$ $\text{Na}_2\text{CO}_3 \cdot 10\text{H}_2\text{O}$). This stock solution can then be dispensed in $125 \text{ cm}^3$ portions to each student.

Q1 (c): Prepare $0.08 \text{ mole dm}^{-3}$ of KOH as solution F.

To prepare $1 \text{ dm}^3$ ($1000 \text{ cm}^3$) of $0.08 \text{ mol dm}^{-3}$ KOH solution.
Molar mass of KOH: $39.10 + 16.00 + 1.008 = 56.108 \text{ g/mol}$.
Mass needed = Molarity $\times$ Volume $\times$ Molar mass

• Weigh out $\mathbf{4.49 \text{ g}}$ of KOH pellets quickly, as it is hygroscopic, using a digital balance.
• Transfer the weighed solid into a beaker and dissolve it in about $200 \text{ cm}^3$ of distilled water. Stir to ensure complete dissolution. (Note: Dissolution of KOH is exothermic).
• Allow the solution to cool to room temperature.
• Carefully transfer the cooled solution into a $1 \text{ dm}^3$ volumetric flask using a funnel.
• Rinse the beaker and funnel with small portions of distilled water and add the rinsings to the volumetric flask.
• Add distilled water until the solution is just below the calibration mark.
• Stopper the flask and invert several times to mix.
• Add distilled water dropwise until the bottom of the meniscus aligns with the $1 \text{ dm}^3$ calibration mark.
• Stopper and invert the flask several times to ensure thorough mixing.
• Label the solution as Solution F ($0.08 \text{ mol dm}^{-3}$ KOH). This stock solution can then be dispensed in $125 \text{ cm}^3$ portions to each student.

Q1 (d): Prepare methyl orange and phenolphthalein indicators.

• Dissolve $\mathbf{0.1 \text{ g}}$ of methyl orange powder in $100 \text{ cm}^3$ of distilled water. Stir until completely dissolved.

• Dissolve $\mathbf{1 \text{ g}}$ of phenolphthalein powder in $100 \text{ cm}^3$ of ethanol (or industrial methylated spirit). Stir until completely dissolved.

Q2: Provide samples and reagents.

• Provide $\mathbf{2 \text{ g}}$ of Tin(II) Chloride labeled as SAMPLE B1.
• Provide $\mathbf{2 \text{ g}}$ of 2-Hydrobenzoic Acid (Salicylic Acid) labeled as SAMPLE B2.
• Ensure that all necessary test reagents for inorganic and organic qualitative analysis are provided in the laboratory benches as instructed.