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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A 54.0 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 375 g of water, initially at 21.2°C. What is the final temperature of the water, if no heat is transferred to the Styrofoam or the surroundings?
Precipitate, explain how dissolving the group iv carbonate precipitate with 6M CH3COOH, followed by the addition of extra acetic acid.
A 2 mL sample was taken of a solution of barium iodate at 10 degree C. the sample was mixed with 2 mL of 0.5 M KI and 2 mL of 1M HCl. The transmittance of the mixture was read and compared to a calibration curve which indicated a concentration of
The frequency of the absorption from the ground to the excited state is 2885 cm-1. What is the population ratio when temperature goes up to 50 oC
A student separated the components of a 2.743 g sample of beach sand. The separation yielded 0.632 g sea salt, 0.456 g sea shells, and 1.352 g sand. (A) calculate the mass percent of each component in the original mixture. (B) Calculate the total
The phase behaviors of Mo-W mixtures and Mo-Si mixtures are markedly different. Give a detailed explanation for why this is.
Kc is 4.2 at 1650 degrees C. If 0.5 mole of H2 and 0.3 mole of CO2 are injected into a 1.0 Lflask, What are the equilibriums of all species?
A solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39 C . The boiling point of pure cyclohexane is 80.70 C. Calculate Kb for cyclohexane. Express the constant numerically in degrees Celsius per molal.
The equilibrium constant for this reaction at 1400K is 4.7. A mixture of reactants and products at 1400K contains 0.035 M H2O, 0.050 M CH4, 0.15 M CO, and 0.20 M H2
how many grams of AgNO3 can be produced by reacting completely 88.0g of Ag? (c)- state the number of grams of water that can be obtained by the reaction of 324g of Ag with 126g of HNO3
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