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A solution is prepared by dissolving 16.2 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.50 mL sample of this stock solution is added to 59.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.
Assume that the kinetic energy of a 1500kg car moving at 95 km/h can be converted entirely into heat. What amount of water could be heated from 20 C to 50 C by the car's energy?
From the Mn concentrations (3.56ppm and 3.71ppm) and uncertainty
Calculate the partial pressure of water above the solution, in torr.The vapor pressure of pure water at 55°C is 118.0 torr. The MW of lactose is342.3 g/mol
If 88 J of heat are added to a pure gold coin with a mass of 20 g, what is its temperature change? Specific heat capacity of gold is 0.128 J/g'C
A clinic took temperature readings of 250 flu patients over a weekend and discovered the temperature distribution to be Gaussian, with a mean of 101.30°F and a standard deviation of 0.8490
How many grams of NH4Cl must be added to 0.490 L of 1.00 M NH3 solution to yield a buffer solution with a pH of 8.90?
Find the enthalpy change for the chemical reaction below PCl5(g) ----> PCl3 (g) +Cl2 From the following equations:
Calculate how many milliliters of carbon dioxide would be produced theoretically from 20g of sucrose at 25 degrees Celsius and 1 atomosphere pressure.
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 7.60x10^2 cal of work done on it
How many units would have been produced during the second quarter under Lean Production?
a solution consisting of isobutyl bromide and isobutyl chloride is found to have a refractive index of 1.3931 at 20 degrees celsius. The refractive indices at 20 degrees celsius of isobutyl bromide and isobutyl chloride
Thermochemistry and Periodic Properties of Elements. State which atom is larger according to periodic trends. Explain the difference for each of the pairs.
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