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Question: A reverse osmosis unit is used to obtain drinkable water from a source that contains 0.870 g NaCl per liter. What is the minimum pressure (in torr) that must be applied across the semipermeable membrane to obtain water? Assume room temperature or about 298 K.
Determine which metal will reach the lowest temperature If the same amount of heat is added to both the metals?
calculate the equilibrium pressure of N2O4(g) and NO2(g). (c) What percentage (by moles) of the original N2O4(g) is dissociated at the new equilibrium position (total pressure = 1.00 atm)?
acetylene c2h2 will burn in the presence of oxygen.2c2h2g 5o2g --gt 4co2g 2h2oghow many grams of water can be
Give the enthalpies of the reaction P4 (s) + 3O2(g)-->P4O6(s) Delta H= -1640.1 kJ. P4 (s) + 5O2 (g)--->P4O10 (s) Delta H= -2940.1 kJ Calculate the enthalpy change for reaction: P4O6(s) + 2O2 (g)--->P4O10(s)
degrees C are warmed to 100 degrees C. what is the new volume if the pressure remains constant?
The mass of an electron is 9.11 * 10^{-31} kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31*10^{-10}m, how fast is the electron moving relative to the speed of light?
Magnesum metal will burn in carbon dioxide gas to produce carbon and magnesium oxide. What mass of magnesium will react with a 250.0 ml container of carbon dioxide gas at 77.0 degrees celsius and 65.0 kPa.
a solution of acidic potassium permanganate is added to a solution of iron (II) sulfate Write an unbalanced net ionic equation
Imagine that you place a cork measuring 1.30cm x 5.50cm x 3.00cm in a pan of water and that on top of the cork you place a small cube of lead measuring 1.15cm on each edge. The density of cork is 0.235g/cm3, and the density of lead is 11.35g/cm3.
The following data have been obtained for oxygen gas at 273.15K. Calculate the best value of the gas constant R from them and the best value of the molar mass of O2.
1. predict the potential for the following voltaic cell at 25 ccuscuso41.09 magno30.43 magsanswer must be in volts2.
Calculate the final temperature after the two substances are mixed together. The specific heat of water is 4.184 J/ g *c and the specific heat for silicon is 0.7121 J/ g*c.
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