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The diagram shows four states of a system, each with different internal energy, E.
(a)Which of the states of the system has the greatest internal energy?
(b) In terms of the ¢E values, write two expressions for the difference in internal energy between State A and State B.
(c) Write an expression for the difference in energy between State C and State D.
(d) Suppose there is another state of the system, State E, and that its energy relative to State A is ? E= ?E1 + ?E4 . Where would State E be on the diagram?
The value of the equilibrium constant for the reaction: 2 HBr(g) H2(g) + Br2(g) is Kc = 1.26 x 10-12 at 500 K.
an optically pure compound was diluted to 200.0 mL with water and placed in a polarimeter tube 10.0 cm long. The measured rotation was -2.53° at 25 °C. Calculate the specific rotation of the compound.
A piece of magnesium (mass=16.2 grams) reacts completely with 10.7 grams of oxygen. In the second reaction you have 61.4 grams of magnesium and 103.7 grams of oxygen
Calculate the mass of unknown solid required to prepare 100 mL of a solution that is 100 ppm in Ca by assuming that the sample contains 50 wt% CaCO3.
1.) What mass of NaCl is dissolved in 200. g of water if the freezing point of the solution is -2.14 °C. Kf(water) = 1.86 ºC kg/mol
When Lead (2) Nitrate reacts with sodium iodide, sodium nitrate and lead (2) iodide are formed. if i start with 25.2 grams of lead (2) nitrate and 15.0 grams of sodium iodide, how many grams of sodium nitrate can be formed?
what percentage of the original ag remains in solution when 180 ml 2.10times10-2 m agno3 is added to 240 ml
44.0 mL of 0.140 M and Na2SO4 and 25.0 mL of 0.160 M KCl Indicate the concentration of each ion present ?
Magnesium can be obtained by precipitating Mg^2+ as Mg(OH)2(s). The Ksp of Mg(OH)2 is 6.0*10^-10. The magnesium ion concentration is 0.059M. If a sample of solution is treated so its [OH-] concentration is maintained at 2.0*10^-3M
Question- An unknown sample of gas has a mass of 20.15 grams was put in a 3.50 L container that had a temperature of 25 degrees Celsius and a pressure of 3.2 atm. What is the molar mass of this gas.
An alkyne of six carbon atoms gives the same single product in its reaction either with BH3 in THF followed by H2O2 /OH-, or with H2O/Hg2 /H3O . Draw the structure of the alkyne (containing only carbon and hydrogen atoms).
Calculate the heat required to convert 24.0 g of C2Cl3F3 from a liquid at 12.00°C to a gas at 56.00°C
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