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A sodium hydroxide solution of unkown concentration is standardized against potassium biphthate. It takes 37.35 mL of the NaOH solution to neutralize 0.777 grams of KHP. Explain what is the molarity of the sodium hydroxide? Molar mass of KHP= 204 g/mole
The concentration of glucose in blood is approximately 90 mg/100 mL. What is the weight/volume percent concentration of glucose. what is the molariy of glucose
calculate the mL of MnO4 added to reach the endpoint. (b) calculate moles of MnO4 added to reach the endpoint. (c) calculate the number of moles of H2O2 in sample.
A chemist wants to resolve a particular amine, but she has only meso-tartaric acid on hand. She scans the lab inventory and finds several acids, but they are listed only by their common names, which she does not know or remember.
In biochemistry laboratories, solutions of sucrose (table sugar, C12H22O11) are used in high speed centrifuges to separate the parts of a biological cell. How many liters of 3.48 M sucrose contain 170. g of solute
When 50.0 mL of concentrated sulfuric acid is added to 1.15 g of sodium chloride, what volume (in mL) of hydrogen chloride gas is obtained at 1.00 atm pressure and 25oC?
Choose the most likely pattern for the crystal field diagram for the complex trans-[Ni(NH3)2(CN)4]2-, where CN- produces a much stronger crystal field than does NH3.
Given 217 mL of a buffer solution that is 0.46 M formic acid and 0.27 M sodium formate, calculate the pH of this solution after the addition of 2.8 mL of 6.3 M hydrochloric acid. The Ka of formic acid is 1.8x10-4
You take 1 ml of your sample and dialyze it in 1000 ml of buffer. At the end of dialysis what is the concentration of (NH4)2SO4 in your sample. How could you further lower the (NH4)SO4 concentration
Compare and contrast the functions of chloroplasts and mitochondria with respect to energy production
you are given a cube of silver metal that measures1.012 cm on each edge. the density of silver is 10.5 gcm3. the cube
Utilizing the relative rate factors of 1.0:2.5:4.0 for primary: secondary: tertiary hydrogens in 2-methylbutane, Compute the expected composition of the monochlorinated mixture obtained from 2, 4-dimethylpentane.
what is the age of a bone fragment from an archaeological dig if the bone shows an average of 2.5 radioactive events
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