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Explain how many grams of NaCl in 400g of water to lower the ice bath temperature to -10 degrees C? 2) Explain what will be the boiling point elevation, Delta T, if we were to boil the solution described in the last problem?
A nucleus of mass number 27 contains 14 neutrons. An atomic ion of this element has 10 electrons in it. Write the symbol for this atomic ion
A gas is compressed from an initial volume of 5.60 to a final volume of 1.23 by an external pressure of 1.00 . During the compression the gas releases 125 of heat.
How Many Grams of CaCl2 should be dissolved in 500 ml of water to make a .20 M solution of Calcium Chloride
When heated, lithium reacts with nitrogen to form lithium nitride. What is the percent yield of the reaction if 13.9 of Li is heated with 33.3 g of N2 and the actual yield of Li3n is 6.64 g?
When measuring the boiling point of a compound, why is the micro boiling point determined at the point when the last bubble has left the bottom of the bell and the liquid begins to rise in the bell
at 700k the equilibrium constant kc for the gas phase reaction between no and o2 forming no2 is 8.7x 106 the rate
What is the maximum mass of ammonia that can be produced from a mixture of 216.7 g of N2 and 50.20 g of H2
Calculate the heat released when 71 g of steam at 116 degrees C is converted to water at 39 degrees C.
Combining aqueous solutions of BaI2 and Na2SO4 affords a precipitate of BaSO4. Which ion(s) is/are the spectator ions in the reaction
Calculate the minimum number of grams of propane, C3H8(g), that must be combusted to provide the energy necessary to convert 3.28 kg of ice at -11.0°C to liquid water at 80.0°C.
If 19.50g of CaCl2 are dissolved in enough water to give 250ml of solution, what will be the molar concentration if the Cl- ion in this solution
What is the osmotic pressure of human blood at 37°C if human blood is isotonic to 0.16 M NaCl solution? Remember that NaCl almost completely ionizes in water.
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