Determine the heat evolved in freezing water
Determine the heat evolved in freezing water at -10.°C, given that ΔH = -6004 J/mol at 273K for H2O(l) → H2O(s) and that CP,m(l) = 75.3 J/K⋅mol and CP,m(s) = 36.8J/K⋅mol.
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Population of the certain species of fish has the relative growth rate of 1.6% per year. It is evaluated that population in 2000 was 11 million. Evaluate fish population in year 2005.
The rectangular field is to be subdivided in ten equal fields. There is 5050 feet of fencing available. Determine dimensions of field which maximizes total area.
Solve given quadratic equation exactly using quadratic formula. Write solutions in simplest form. Using the calculator, find all irrational solutions to nearest thousandth.
The town had the population of 60,000 in 2000 and 70,000 in 2010. Determine the exponential function which will forecast the populations as the function of number of years since 2000.
Suppose you have a sample of a pure glyceraldehydes of the specific rotation [α] = -8.70. Can you determine from this experimental fact alone, and without consulting the literature, if this is (R) or (S)- glyceraldehydes?
After three days sample of radon-222 has decayed to 58% of its original amount. How long will it take sample to decay to 30% of its original amount?
Determine the specific rotation of an unknown if at a concentration of 2.00/10.0 ml. the observed rotation is.500 , using a 1.00 cm cell.
The pure optically active substance Z has a specific rotation of 1500. Determine the % optical purity (enantiomeric excess) of Z and what % Z and Z' does the sample contain?
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