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If I want to convert this in mg/ml will it be 0.6968mg/ml? thank you very much. 2 mmol/L x 348.4 g/mol x 1 L/1000 mL = 0.6969 mg/mL (In US, "L" is preferred symbol for liter)
50 mg/mL x 1 mol/296.40 g = 168.69 µmol/mL I'm not sure how you would measure this but 100 pmol x 1 mL/168.69 µmol = 592.8 nL of the stock diluted to 10 mL I would make an intermediate solution, 1µL of stock diluted to 1 mL, this intermediate would be 168.69 nmol/mL. I would take 1 uL of intermediate and dilute to 16.869 mL.
Molar is moles per liter. 0.05 mg/ml = 50 mg/L Now you need to know the molecular weight of the substance and divide by it to convert grams to moles. The part is substance-specific.
then take 1 µL of intermediate stock and diluting to 100 mL (10 5 to 1). However, you could use any two factors that multiply out to 13 x 10 6. Or you could dilute 1 µL to 1 mL (1000:1) then dilute 8 µL of intermediate stock to 104 mL (13000 to 1) (ignoring or discarding the extra 4 mL, but it keeps measurements simple)
Re: mg to mg/ml If you want 10 mg of powder per ml of solvent, then: 250 mg / 10 mg/ml = 25 ml So you would need 25 ml of solvent. You came up with the correct answer, but you came up with it in a weird way. 10 mg/ml is not 1%, and 1% of 250 is 2.5 not 25. But you ended up with a correct result so we overlook how you did it.
Re: Convert mg/L to mcg/ml micrograms and milligrams are weights. There is 1000micrograms in 1 milligram. Liters and milliliters are volumes. There is 1000 milliliters in 1 liter. 20ug/mL is the same as 20mg/L 100mg/L is the same as 100ug/mL Is this what you need to know, though?
If your caffeine concentration is 100 mg/150 mL, then it is 666.7 mg/L or 3.4 mmol/L (3.4 mM). You would have to brew it nearly 3X stronger. However, I suspect you are asking how much to reach 10 mmol. At 196 g/mol, it is also 196 mg/mmol, so 10 mmol is 1960 mg. At 100 mg/(small) cup, you could have 19.6 cups of 150 mL, or 2.94 L of coffee.
Re: convert mg/kg to ml/cc You stand a better chance of getting a good answer if you specify exactly what you need with words. For example , not (10 mg/kg to ml/cc) but (mg dosage per kg body weight to dosage volume in cc or ml per kg body weight).
Stock solution is 1`mg/ml. Pls help me in preparing 10µM of final volume 5 ml. 10 µM compound A = 4040 µg/L. You only want need 5mL of this concentration, so 4040µg x 5mL/1000mL = 20.2 µg diluted to 5mL
Those work out to the same value. No conversion is necessary. milligram/liter = microgram/milliliter