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If I am using the M1V1=M2V2 dilution equation and I am given M1, M2, and V2, and the final answer is asked to be in milliliters, do I still have to convert the final volume into liters to get V1 in terms of liters or can I leave it in milliliters and get my answer in millimeters?
I am assuming that you are asking if you can just leave the Volume of the one as milliliters? If that's the case, yes you can. Think of the units that are canceling out. If M1 and M2 has the same unit, it cancels out together. As long as you remind yourself that you are using the same units for M1 and M2 or V1 and V2, you can use whichever unit. Just make sure to remember which unit you end up with as well.
If the V2 value provided is in milliliters, then the V1 could be directly solved for in milliliters because the units match up. If the V2 is in liters, you could either convert it to milliliters before solving for V1 or solve for the value of V1 in liters and then convert it to milliliters. Hope this helps!
If the question wants the final answer in milliliters, then there is no need to convert anything into liters. However, if the measurement is given in liters, the you would need to convert that into milliliters by using the conversion: 1 milliliter=0.001 liters.
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