Structure of the major organic product
Draw the structure of the major organic product in the following hydroboration-oxidation reaction. (Sia = siamyl = sec-isoamyl = 1,2-dimethylpropyl.)
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How efficient is the extraction of the tea leaves containing 1.0 g of caffeine with the two 3 mL portions of chloroform over that of a single-step reaction?
Calculate the mass of silver chloride required to plate 215 mg of pure silver if silver chloride contains 75.27% Ag.
The heat evolved when a mole of octane undergoes complete combustion is 1303 kcal. This is called the heat of combustion. How many kcal of heat wil be generated when 148 grams of octane react with 952 grams of oxygen?
Calculate the de Broglie wavelength of an electron in the ground state of the H atom. Show that this wavelength is equal to the circumference of the "orbit"
Dry ice (solid CO2) has a vapor pressure of 1 atm at -77.2 deg celsius and 2 atm at -69.1 deg celsius. Calculate molar enthalpy of sublimation for dry ice.
Some sulfuric acid is spilled on a lab bench. It can be neutralized by sprinkling sodium bicarbonate on it and then mopping up the resultant solution.
Acetylene gas is produced by adding water to calcium carbide. How many moles of cac2 can be formed from 98g of h20? How many grams of acetylene are produced by adding water to 5g of CaC2?
An unknown compound has the formula CxHyOz. You burn 0.220 g of the compound and isolate 0.312 g of CO2 and 0.191 g of H2O. What is the empirical formula of the compound? If the molar mass is 62.01 g/mol, what is the molecular formula?
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Program evaluation is a systematic process of collecting and using data to assess how well a program achieves its goals.
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