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What is the molality of a solution of aluminum nitrate that contains 31.0 g of Al(NO3)3 dissolved in 295.0 g of water? Use molar masses with at least as many significant figures as the data given. What is the molality of each of the ions in solution?
The molar constant volume heat capacity for I_2(g) is 28.6 J/ mol K. What is the vibrational contribution to the heat capacity. You can assume that the contribution from the electronic degrees of freedom is negligible.
A pound of coffee beans yields 40 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1.0 of coffee beans?
Suggest a simple chemical test that would distinguish between the following compounds. State what you would see: a) n-pentane and 1-pentene
The standard reaction enthalpy for the decomposition of CaCl2_NH3 into CaCl2 and NH3 is nearly constant at +78 kJ/mol between 350 K and 470 K.
At 0.0oC, if the volume of air is 1.5 mL and the pressure of the atmosphere that day is 735 mmHg, what is the number of moles of air?
The following density measurements were made on a bar of iron: 7.58 g/mL, 8.02 g/mL, 7.83 g/mL, 7.80 g/mL, and 7.66 g/mL. The accepted value for iron's density is 7.85 g/ML. Find:
Can write the valence electron configs for the period 2 homonuclear diatomic molecules, but I don't understand the coefficients for this gerade/ungerade notation
At a certain temperature, reaction has equilibrium constant (Kc) of 1.9 x10^19. Determine the equlibrium constant for the reaction based on this information at the same temperature.
mixture of 2-amino-propanoic has a specific rotatio of -5.6. What is the percent composition of the mixture of the specific rotation for the S enantiomer is +14.5
How can you visually demonstrate that a substance is insoluble or just slightly soluble. Some solid remains in both cases.
Determine the freezing point (°C) of a 0.015 molal aqueous solution of MgSO4. Assume i = 2.0 for MgSO4. The molal freezing-point-depression constant of water is 1.86 °C/m..
What are the partial pressures of N2 and H2O. A miniature volanco can be made in the laboratory with ammonium dichromate. When ignited, it decomposes in a fiery display. (NH4)2Cr2O7(s)
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