Also is mg/ml the same as g/l? Im doing a biochem assignment and I'm sooo stuck. Thanks for any help at all.
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I'm going to assume you meant 43.000g/mol when you mentioned the molecular weight. Given the information, you have to assume that the mass is 0.4g for these calculations.
n = m/M (n is moles, m is mass & M is molar mass)
n = 0.4g/ 43.000g/mol
n = 0.0093 mol
M' = n/v (M' is molarity, n is moles & v is volume)
M' = 0.0093 mol/1L
M' = 0.0093 mol/L
No mg/ml is not the same as g/L. mg/ml must be multiplied by a (1000/1000) to convert to g/L. 1000/1000 basically means top and bottom must both be multiplied by a 1000.
n = m/M (n is moles, m is mass & M is molar mass)
n = 0.4g/ 43.000g/mol
n = 0.0093 mol
M' = n/v (M' is molarity, n is moles & v is volume)
M' = 0.0093 mol/1L
M' = 0.0093 mol/L
No mg/ml is not the same as g/L. mg/ml must be multiplied by a (1000/1000) to convert to g/L. 1000/1000 basically means top and bottom must both be multiplied by a 1000.