How many millimoles are in 500.0 g of alanine (MW = 89?)

moles = grams/molar mass.

millimoles = moles x 1000

500.00g / 89 g/mol = 5.62 moles

1 mole = 1000 millimoles
(5.62 moles)(1000 mmol/mole) 5620 millimoles.

Are you sure the mass is 500.0 grams? Could it me milligrams?

To find the number of millimoles in 500.0 g of alanine, we need to first calculate the number of moles using its molecular weight, and then convert it to millimoles.

The molecular weight (MW) of alanine is given as 89 g/mol.

Step 1: Calculate the number of moles.
To find the number of moles, we use the formula:
Number of moles = Mass / Molecular weight

Number of moles = 500.0 g / 89 g/mol
Number of moles ≈ 5.62 moles

Step 2: Convert moles to millimoles.
To convert from moles to millimoles, we multiply the number of moles by a conversion factor:
1 mole = 1000 millimoles

Number of millimoles = Number of moles * 1000
Number of millimoles ≈ 5.62 * 1000
Number of millimoles ≈ 5620 millimoles

Therefore, 500.0 g of alanine contains approximately 5620 millimoles.