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A 309 mL sample of unknown HCl solution reacts completely with Na_2CO_3 to form 10.1 g CO_2. What was the concentration of the HCl solution?
If the molality of your solution is 0.30, calculate the contribution to the percentage error in your results due to not correct for the errors in the thermometer readings.
What chemical test might be used to distinguidh between pentanal and 2-pentanone? Between benzyl alcohol
Propose a structure for an amine of formula C4H9N, which does not liberate a gas when treated with NaNO2 and HCl, and has IR absorptions at 917 cm-1, 990 cm-1, and 1640 cm-1, as well as an N-H absorption at 3300 cm-1. The 13C NMR spectrum is as fo..
What element within the reactants is oxidized in the following equation, and what element is reduced. I2 + 2 Br - ? 2 I- + Br2
If the process occurs adiabatically and at constant (atmospheric) pressure (a) what is the mass of water that solidifies and (b) what is the change in entropy of the system?
What is the high-T approximation for rotations and vibrations? For which of these two degrees of freedom do you expect this approximation to be genrally valid at room temperature?
Calculate the number of atoms in 0.406 g of potassium (K). Enter your answer in scientific notation.
The following compound has two stereoisomers. One has a dipole of 0 D, and the other has a dipole moment of 2.95 D. Draw the structure of the stereoisomer with dipole moment of 0 D.
celsius absorbs 281kJ of heat from a mountain climber's stove at an elevation where the boiling point of water is 89 degrees celsius, how many kJ are required to boil the water?
silver has an average atomic mass of 107.87 u. if 48.18 of ag exists as ag-109 108.9047 u what is the identity and the
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 700 mL of 0.175 M potassium hydrogen phthalate to give a buffer of pH 6.00?
The osmotic pressure of the solution is 1.21 atm at 27 °C. What is the molar mass of the solute?
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