342 grams of Lactose in 1 litre water or 34.2 grams in 100 mls.
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A 1 molar solution of lactose would contain 342.30 grams of lactose per liter of solution. This concentration would give you one mole of lactose molecules in one liter of solution.
They're actually exactly the same in that neither of them exists.
A 1 molar solution refers to a solution that contains 1 mole of solute dissolved in 1 liter of solvent. This concentration is commonly used in chemistry to describe the amount of a substance dissolved in a certain volume of solution. It is a way to express the concentration of a substance in a solution.
Semi-molar refers to a solution that is halfway between being molar (having a concentration of 1 mole of solute per liter of solution) and being dilute. It typically refers to a solution where the concentration falls between 0.1 to 1 mole per liter.
To calculate the molarity for a millimolar (mM) solution, divide the number of millimoles of solute by the volume of the solution in liters. For a nanomolar (nM) solution, first convert nanomoles to moles, then divide by the volume in liters to obtain the molarity. Ensure to adjust the units accordingly to maintain consistency throughout the calculation.
Lactose plus water is known as lactose solution.