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The concentration of glucose in blood is approximately 90 mg/100 mL. 1. What is the weight/volume percent concentration of glucose? 2.what is the molariy of glucose?
A student dissolves 1.01 grams of nicotinic acid, C_6_H_5_NO_2_, in water to give 60 mL of solution having a pH of 2.67. What is the approximate value of Ka for the acid based on this observation?
Suppose you have made 1L worth of a mixture of methanol and water, by mixing 3 parts of methanol and 2 parts of water by mass. Assume for simplicity that the volume of the mixture is exactly equal to the sum of the volumes of the ingredients (whic..
Assuming that the drug components whose spots you identified dissolved completely when you stirred the tablet with 1:1 ethanol/dichloromethane, what was the solid that remained behind?
How many grams of ammonium sulfate should be dissolved in 160 ml of water for the preparation
What wavelength lambda should the astrophysicist look for to detect a transition of an electron from the n= 7 to the n=3 level
Elliptical holes estimate the angle of entry : Cos A bullet hole in a wall at a crime scene is elliptically shaped. The loner dimension is 20 mm and the shorter dimension is 14 mm. What is the angle of entry?
Calculate the mole fraction of ethanol, C2H5OH, in a solution that contains 230. grams of C2H5OH and 312 grams of benzene, C6H6.
Derive an expression for the partition function for a molecule with two states separated by energy hν (i.e. ε1 = 0 and ε2 = hν). If we consider a canonical ensemble of N such molecules, derive expressions for the total internal energy and the heat..
What is the concentration of a saturated calcium carbonate solution?
Determine what is the density of the oxygen gas in the full bottle If A cylindrical gas lecture bottle has internal dimensions of 18.0 cm in diameter and a height of 49.0 cm and weighs 1.75 kg when empty.
A 4.80 g nugget of pure gold absorbed 279 J of heat. What was the final temperature of the gold if the initial temperature was 22.0°C? The specific heat of gold is 0.129 J/(g·°C).
If 66.5 ml of base is required to reach the second equivalence point, what is the concentration of the acid?
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