# chemistry

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Compound C (MW = 550) is provided at a concentration of 25g/100mL. 1mL is taken and compound D is to be added (MW = 1025, concentration = 75mM) to give a final ratio of compound C:D of 4:1. What volume of compound D is to be added?

• chemistry -

Jenny has posted this problem before and I responded by asking if the 4:1 ratio is by grams or by molarity. It makes a difference. Don't guess at the answer; find out which ration is needed and repost.

• chemistry -

the ratio is moles

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