How many grams of ethyl alcohol added to water
How many grams of ethyl alcohol, C2H5OH, must be added to 1.000 kf of water so that the solution will not freeze until -20 degrees C? For water, Kf= 1.86 degrees C/m.
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In an experiment, 23.4g of iron sulphide, FeS (s) are added to excess oxygen, and 16.5 grams of iron (III) oxide, Fe2O3(s) are produced. the balanced equation for the reaction is: Calculate the precent yeild of iron (III) oxide in the experiment.
Calculate the percent yield of benzophenone to triphenylmethyl reaction. started with 4.09g of benzophenone and ended up with .682g triphenylmethyl can anyone help me convert these into moles and calculate the yield
One mole of an ideal diatomic gas is heated from a temperature of 22 degrees C to a temperature of 95 degrees C at constant pressure. How much work in joules is done by the gas?
Consider a solution that is 1.1*10^-2 M in Ba2+ and 2.0*10^-2 M in Ca2+. A - If sodium sulfate is used to selectively precipitate one of the cations while leaving the other cation in solution, which cation will precipitate first? Ba2+ precipitates
Balance the following reactions. You may have to supplement the reaction with H+, H2O, or OHdepending on the reaction conditions
What are the formal charges on the sulfur (\rm S), carbon (\rm C), and nitrogen (\rm N) atoms, respectively, in the resonance structure that contributes most to the stability of the thiocyanate ion, \rm SCN^
Calculate the reversible emf of the cell and its temperature coefficient; Determine the amount of heat to be supplied or removed from the cell to maintain a constant temperature of 25 oC under reversible conditions;
The molecular weight of vincristine, a pharmaceutical drug
The titration of a 23 ml sample of 0.110 M HC2H3O2 with 0.130 M NaOH. Determine the following? the initial pH, the volume of added base required to reach the equivalence point
A student was asked to determine the strength of the acetic acid in a vinegar solution. For 25.00 mL of vinegar he used 32.05 mL of a 0.4235M solution of sodium hydroxide to neutralize using phenolphthalein as indicator. What was the concentration
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