How many milligrams of methionine will be required to make 200Mm solution with a volume of 100 ml?

To calculate the amount of methionine required to make a 200 mM (millimolar) solution with a volume of 100 ml, you'll first need to understand the definition of millimolar (mM).

Millimolar (mM) is a unit of concentration representing the number of millimoles of solute (in this case, methionine) per liter of solution. So, a 200 mM solution means there are 200 millimoles of methionine per liter of solution.

To find out how many milligrams of methionine are required, you'll need to follow these steps:Convert the volume from milliliters (ml) to liters (L), since the concentration is given in millimoles per liter.
Use the given concentration (200 mM) to find out the number of millimoles of methionine required.
Convert the millimoles to milligrams using the molar mass of methionine.

Let's go through the calculations:

Convert volume to liters: 100 ml = 100/1000 = 0.1 L

Calculate the number of millimoles of methionine required: Concentration (mM) = moles / volume (L) 200 mM = moles / 0.1 L moles = 200 mM × 0.1 L = 20 millimoles

Convert millimoles to milligrams using the molar mass of methionine: The molar mass of methionine (C5H11NO2S) is approximately 149.21 g/mol. 20 millimoles × 149.21 mg/mmol ≈ 2984.2 mg

So, approximately 2984.2 milligrams of methionine will be required to make a 200 mM solution with a volume of 100 ml.