I feel like this is really simple, but I don't know where to start with this question.
Explain how to make 250mL of 20%sucrose solution.
No problem, I'm here to help! To make a 250mL 20% sucrose solution, you'll need to follow these steps:
Step 1: Determine the amount of sucrose needed.
To calculate the amount of sucrose needed, you'll need to know the desired final concentration (20%) and the volume of the solution (250mL). The concentration is given as a percentage, so you'll need to convert it to grams per milliliter (g/mL).
Since 20% means 20g per 100mL, you can calculate the amount of sucrose needed as follows:
20g/100mL = Xg/250mL
To find X (the amount of sucrose needed):
X = (20g/100mL) x 250mL
Step 2: Measure and add the sucrose.
Using a weighing scale, measure the calculated amount of sucrose and add it to a clean container (such as a beaker or flask).
Step 3: Add water to reach the final volume.
Once the sucrose has been added, add clean water to the container while stirring or swirling gently. Continue adding water until the total volume reaches 250mL.
Step 4: Stir to dissolve completely.
Stir the solution until the sucrose is completely dissolved. It's important to ensure that all the sucrose crystals are dissolved evenly throughout the solution.
And voila! You have successfully prepared a 250mL 20% sucrose solution.