Biology Forum › Molecular Biology › Concentrations
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- April 21, 2009 at 11:47 am #11247
sophi3nuttParticipantA solution of BCG (10mg/L) was used.
1.0 ml of BCG was added to 4.0 ml of water.
How do I find out the moles/litre for this?
Molecular weight of BCG is 698.
Thanks - April 21, 2009 at 2:02 pm #90252mithParticipant
find how much solute you have, divide by how much solvent. Change to moles as necessary.
- April 30, 2009 at 4:57 am #90483trangleeParticipant
first: we find the weight of BCG when solution 1.0ml :
= 10mg/L x 1.0 X 10^(-3)L= 0.01 mg= 0.0001g
and we have the mole of BCG
=0.0001/698=0.00000014(mol)
the moles/litre is:
=0.00000014/((1.0+4.0)x10^(-3))=0.00003
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