Heads appearing on the second two tosses
A fair coin is tossed four times. What is the probability that the number of heads appearing on the first two tosses es equal to the number of heads appearing on the second two tosses ?
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Software to detect fraud in consumer phone cards tracks the number of metropolitan areas where calls originate each day. It is found that 3% of the legitimate users originate calls from two or more metropolitan areas in a single day.
If 19.0 mL of 4.18E-2 Mbarium hydroxide are required to neutralize the hydrobromic acid, what is the percent by weight of hydrobromic acid in the mixture?
What is the nuclide symbol for the nucleus that contains 6 protons and 7neutrons? (Enter the mass number in the first raised box, theatomic number in the second lower box, and the element's symbol,with charge if necessary, in the third box.
0.12g of rock salt (NaCl and impurities) was dissolved in water and titrated with 0.1 M silver nitrate. 19.7 mL was required to titrate all the chloride ion.
Determine the refrigeration load and the COP if this system operated on the simple gas refrigeration cycle. Use the same compressor inlet temperature as given, the same turbine inlet temperature as calculated
When 100.0 mL of a solution of an acid, HA, and 100.0 mL of asolution of a base, BOH, are mixed in a calorimeter, thetemperature increases from 21.7 degrees Celsius to 35.8 degrees Celsius. The heat capacity of the calorimeter is 10.5 J/Cdegrees.
The work done during the compression process is equal to 150 kJ. A. What is the final volume in the cylinder. B. What is the final pressure of the air in the cylinder.
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