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Menthol is a flavoring agent extracted from peppermint oil. It contains C, H, and O. In one combustion analysis, 10.00 mg of the substance yields 11.53 mg H2O and 28.16 mg CO2. What is the empirical formula of menthol? Add subscripts to complete the empirical formula.
Identify the following compound from its IR and proton NMR spectra. C4H6O: NMR: ? 2.43 (1H, t, J = 2 Hz); ? 3.41 (3H, s); ? 4.10 (2H, d, J = 2 Hz) IR: 2125, 3300 cm1
If the heat capacity of the calorimeter is 85 JK , and the density of the liquid -1 is 2.34 gmL , what is the specific heat capacity of the unknown liquid?
Problem- Glucokinase has a higher Km than hexokinase. Which of the following accurately describes the activity of glucokinase with respect to the enzymes Km
Find values of humidity ratio, enthalpy, find specific volume for saturated air at 14.696 psia pressure for temperatwe of 75F from a psychrometric chart and calculate the same values using perfect gas relation.
What mass of hydrogen chloride gas is required to produce 250ml of a hydrochloric acid solution with a pH of 1.57
A student has a flask filled with 0.385 grams of a gas at 26.2 Celsius and 1.01 atm. The flask has a volume of 138.2 mL
transferred from an oven (183°C) to 189 g of water at 23.2°C, into which it is immersed. The water and steel together reach a temperature of 27.9°C. What is the mass of the steel in grams
a urine sample contains 46.5mgl-1 of ethanol. the density of ethanol is 0.79gcm-3. what is the concentration expressed
thomas used equimolar amounts of diethylamine and alpha chloro-26-dimethylacetanilide in the preparation of lidocaine.
What information does an absorption spectrum of a compound give you, aside from the wavelength with the max absorbency
What is the heat output of each sample? (b) One serving of each cereal is 30.0 g. How would you label the packages of the two cereals to indicate the fuel value per 30.0-g servings in joules? in nutritional calories (kilocalories)
What would be the pH of 87 mL of the buffer to which 8.5 mL of 0.11 M hydrochloric acid has been added?
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