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If produced ethanol from sucrose and do fractional distillation. Why do require adding potassium carbonate before distillation?
The temperature of the calorimeter and the 1 kg of water rose from 20.45 degrees Celsius to 23.65 degrees Celsius. The heat capacity of the calorimeter is 2.21 kJ/Degrees Celsius. Using this information, determine the heat of combustion per mole o..
The melting point of Ca is 851 C, it's solid state specific heat (Csolid) is ).632 J/g C, and its heat of fusion is 233 J/g. How much energy, in joules, is required to melt 52.0 g of Ca at each of the following initial temps? a) its melting point ..
Lactic acid, CH3CH(OH)COOH, has a Ka value of 1.4x10-4. How many grams of lactic acid must be added to make 151.0 mL of solution with a pH of 2.21
Calculate the density of N2 at STP a)using the ideal gas law and b) using the molar volume and molar mass of N2
Consider the following chemical equation. H2(g) + I2(g) ? HI(g) Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen iodide are produced from 725 mL of H2
A compound contains 10.13% C, and 89.87% Cl (by mass). Determine both the empirical formula and the molecular formula of the compound given that the molar mass is 236g/mol
A vessel containing 45.0 cm3 of helium gas at 25°C and 106 kPa was inverted and placed in cold ethanol. As the gas contracted, ethanol was forced into the vessel to maintain the same pressure of helium.
Predict whether each of the following molecules is polar or nonpolar: (a) CCl4 (b)NH3 (C)SF4 (d) XeF4 (e) CH3Br (f) GaH3
what mass of sucrose should be combined with 537 ml of water to make a solution with an osmotic pressure of 8.55 atm at
Consider the following reaction at equilibrium. What effect will increasing the volume of the reaction mixture have on the system
What does the structure of isopinocampheol (the product of a hydroboration-oxidation reaction of (1R)-(+)-alpha-Pinene) indicate about the mechanism of the reaction in terms of regioselectivity and stereoselectivity
Based on the values of the standard reduction potentials, predict what happens when adding and write the relevant equations. copper to a 1 M solution of nitric acid zinc to a 1 M solution copper to a 1 M solution of hydrochloric acid zinc to a 1 M..
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