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Q1. Why do oils and fats melt over a range of temperatures?
Q2. What do the melting temperatures of the fats and oils suggest about their fatty acid composition?
Q3. How could you use this information to make a reduced-fat chicken stock or beef stock?
A laboratory stockroom has a stock solution of 90%(m/v) sulfuric acid,H2SO4(aq). If a technician dilutes 50ml of the stock solution to a final volume of 300ml, what will be the new mass/volume percent concentration?(HINT: the dilution formula ..
Calculate the ion mobility of 100nt long DNA molecules and single nucleotide molecules. Correlate this to the conductivity of the solution.
After labeling the molecule with a fluorescent tag it become clear that it is moving. To examine this you plot the average displacement squared versus time. How would you interpret the following results? In general terms, can you give a physical e..
What is the name of the value that can be calculated that expresses with a number how precise and how accurate each group is?
a ball is thrown verticall downward with an initial speed 11.3 m from a roof of a building 39.0m above the ground .how long doest it take to reach the ground? what is its speed of impact?
An unknown liquid sample is analyzed using paper chromatography using solvent X as the mobile phase. One spot is observed after the plate is developed and visualized.
Explain what is the resulting total pressure of gases in the now-joined flasks? Presume no reaction between the gases and that the gases behave ideally
A solution is 0.0100 M in Pb2+ ions. If 0.103 mol of solid NaI is added to 1.00L of this solution (with negligible volume change), what percent of the Pb2+ ions remain in solution?
A 4.40 g nugget of pure gold absorbed 289 J of heat. The initial temperature was 21.0°C. What was the final temperature?
Van der Waals constants can be found here. P= ? atm Use the ideal gas equation to calculate the pressure under the same conditions. P= ? atm
Explain why the number of moles must remain constant for any of the gas laws to apply
What is the total number of liters of O2(g) produced from the complete decomposition of 0.500 mole of KClO3(s)?
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