Describe what is meant by part per million
Describe what is meant by part per million and part per billion. Compare and contrast the normal definition when referring to a liquid and gas?
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Property crime rates (per 100,000 residents) for the 50 states and the District of Columbia have a mean of 3377.2 and a standard deviation of 847.4. Assuming the distribution of property crime rates is normal, approximately all of the property cri
Macrophages are cells referred to as "big eaters" or "killing machines" that destroy any foreign agents (pathogens) or antibodies found in the body.
The Henry's law constant for hydrogen in water at 25 C is 7.8 \times 10^ 4 mol/L *atm. Estimate the number of moles of hydrogen gas that remain dissolved in the solution.
According to news reports in early 1995, among the first Pentium chips Intel made, some had a peculiar defect, which rendered some rarely carried-out arithmetic operations incorrect.
The time between arrivals of customers at the drive-up window of a bank follows an exponential probability distribution with a mean of 10 minutes.
Using the heats of vaporization for at 25 = 44.02 , at 100 = 40.67 , calculate the entropy change for the vaporization of water at 25 and at 100 .
A mixture of potassium chloride and potassium bromide weighing 3.595 g was heated with chlorine which converted the mixture completely to potassium chloride.
The thermal decomposition of N2O5 obeys first-order kinetics. At 45 degrees Celcius, a plot of ln(N2O5) versus t gives a slope of -7.10 * 10^-4 min^-1. What is the half life of the reaction?
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