Calculation of the ascorbic acid in the sample
If an air bubble is originally trapped in the buret tip but disappears during the titration, how does this affect the calculation of the ascorbic acid in the sample of juice? Explain.
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A 1.90 g sample of a large boimolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point c
A 45.5g sample of copper at 99.8 Celsius is dropped into a beaker containing 151 g of water at 18.5 Celsius. What is the final temperature when thermal equilibrium is reached?
A 3.00 L helium balloon, initially at STP, floats up to an altitude of 10 km, where the pressure is 200.0 torr and the temperature is -45°C. What is the balloon's new volume?
A rigid tank has a volume of 0.06m3 and initially contains a two-phase liquid-vapour mixture of H2O at a pressure of 15 bar and a quality of 20%.
The one way bandwidth available to a single operator in the telecommunication system is 12.5 Mhz with a bandwidth of 30 Khz and 21 control channels. Calculate the efficiency with which this system utilizes bandwidth for a particular installati
A 325 mL sample of solution contains 25.3 grams of CaCl2. Calculate the molar concentration of Cl- in this solution.
A mixture of gases contains 0.290 mol CH4, 0.250 mol C2H6, and 0.270 mol C3H8. The total pressure is 1.60 atm. Calculate the partial pressure of the gases.
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You now turn your attention again to the lower intertidal zone. Individuals of all three species can survive there in the absence of the others
Which of the following occurs during the replication of a DNA molecule? A will be paired with G, and T will be paired with
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Describe the various layering arrangements and cell shapes of epithelial tissue. What characteristics are common to all epithelial tissues?
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