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How do you prepare 0.5 liters of 0.01 mg/ml, ascorbic acid given the molecular weight is 176.1 g/mol?
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- A martini, weighing about 5.0 oz (142 g), contains 30.0% by mass of alcohol. About 15% of the alcohol in the martini passes directly into the bloodstream (7.0 L for an adult). Estimate the concentration of alcohol in the blood (g/cm3) of a person who drinks two martinis before dinner. (A concentration of 0.00080 g/cm3 or more is frequently considered indicative of intoxication in a normal adult.)An alcoholic drink contains methanol (CH3OH; density of 0.792 g/mL), in which at high dosage, is lethal. If an average person weighs 55.0 kg and drinks 2.00 L and drinks 2.00 L of that alcoholic drink, what is the highest % v/v concentration of methanol in that alcoholic drink for it to be safe if minimum lethal dose is around 0.300 g/kg of body weight?1) 0.1% w/v = ? mg/100 ml? Only include the number and not any units 2) 0.1% = ? ug/ml? Only include the number and not any units 3) What is the concentration of your stock in ug/ml? Only include the number and not any units 4)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places. 5)What dilution of your stock do you need to get the first standard (100 ug/ml)? Express as 1:x, where x is the fold dilution needed. 6)What weight of tartrazine (in mg) would you need to make up 250 mL of a 2.5 mM solution (MW of tartrazine is 534.4 g/mole)? Give your answer to the nearest whole number. write the number only, not the units
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