How to prepare 500ml of 7% Question 6

You need to make 500mls of a 7% bovine serum albumin solution. What mass, in grams, do you need to add? Perform the calculation then type in the correct answer to 1dp. Do not add units or additional spaces.

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35 grams

To prepare a solution with a specific concentration, you need to know the mass and volume of the solute and the volume of the solvent. In this case, you want to prepare a 7% bovine serum albumin (BSA) solution with a volume of 500ml.

To calculate the mass of BSA needed, you can use the formula:

Mass of solute = (Volume of solution * Concentration of solute) / 100

In this case, the volume of solution is 500ml and the concentration of solute is 7%.

Mass of BSA = (500ml * 7%) / 100

To calculate this, multiply 500ml by 7% and divide the result by 100.

Mass of BSA = (500 * 7) / 100 = 35g

Therefore, you need to add 35 grams of BSA to prepare the 500ml solution with a 7% concentration.