Caffeine-extraction-from-tea-leaves lab
Explain why the separatory funnel should not be shaken after adding sodium carbonate in a caffeine-extraction-from-tea-leaves lab?
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0.100 moles of NaOH are combined with 0.125 moles acetic acid. the mixture is taken to a final volume of 100.0ml. what is the expected pH of the solution?
A KCl solution is prepared by dissolving 25.0 g KCl in 250.0 g of water at 25°C. What is the vapor pressure of the solution if the vapor pressure of water at 25°C is 23.76 mm Hg?
Gallium arsenide is a common semiconductor. This material becomes a conductor when irradiated with infrared light whose frequency is 3.43 × 1014 s-1. Calculate the band gap of GaAs in kJ/mol.
Calculate the density of vanadium which crystallizes in a body centered cubic lattice, the length of the edge of a unit cell being 300 pm.
Calculate the theoretical mass of hydrogen chloride formed in the reaction of sulfuric acid 2.00 mol with sodium chloride 150 g. Hydrogen chloride can be prepared by the following reaction:
At the boiling point of water,the Fahrenheit temperature is 112 degrees higher than the Celsius value. At the the freezing point the difference is only 32 degrees. At what temperature do both scales have the same reading?
Question, Suppose Intel's stock has expected return of 30% and a volatility of 55% while coke has expected return of 10% and volatility of 30%. If these two stocks were perfectly negatively correlated
Consider the reaction of sulphuric acid, H2SO4, with sodium hydroxide, NaOH.
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