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Tim and a friend left a campsite on a trip down a river in a canoe, maintaining a constant speed of 4 miles per hour. Four hours later, Tim's father set out after them in a motorboat carrying the camping supplies. The motorboat traveled at a rate of 12 miles per hour. How long after he started did Tim's father overtake the boys?
It takes a passenger train 2 hours less time than it takes a freight train to make the trip from Brownsville to Greentown. If the passenger train averages 60 miles per hour on the trip while the freight train averages 40 miles per hour on the trip, how far is it from Brownsville to Greentown?
The mass spectrum of an organic compound shows the relative abundances of M to be 58.07% and M 1 to be 8.165%. Assuming the peaks are caused by 12C and 13C isotopes
An oxygen molecule is adsorbed onto a small patch of the surface of a catalyst. It's known that the molecule is adsorbed on 1 of 36 possible sites for adsorption
Bulb B has 0.4 mole of ideal gas B at a pressure of 3 atm and is at 100 C. Calculate the final pressure of gas A when the two bulbs are open to each other.
Given a concentration of 100 ppm in water, calculate the predicted equilibrium concentration concentration in air for methyl tertiary-butyl ether (MTBE)
a sample of neon gas is held in a rigid 1.814l container with a pressure of 1.273atm at 25 c. 3.193g of an unknown gas
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
what is the percent of sulfate in 22.04 grams of barium
Phosphorus pentachloride decomposes according to the chemical equation Kc=1.80@250C PCL5(g) PCL3(g)+CL2(g) A 0.240 mol sample of PCl5(g) is injected into an empty 3.95 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and P..
Give the product(s) for the reaction of (E) 3-hexene with OsO4/H2O2. Give the Fisher projection for all the products. Draw the Newman Projection for each.
The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (C3H8) to burn it completely.
calculate the calorimeter constant if 25 g of water at 60c was added to 25 g of water at 25c with a resulting
Elevation Pressure 0 ft 760 mmHg 1000ft 740.2 mmHg 2000ft 720.4 mmHg What is the boiling point of water at an elevation of 6.00×10^3 ft
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