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Considering the given chemical reaction
CaCN2 + 3H2O --> CaCO3 + 2NH3 .
determine how much Ammonia would be formed if 187 grams of calcium carbonate CaCO3 are formed?
Molecular formula of C10H14. The carbon NMR shows 7 carbon peaks and 4 H peaks. H(4) broad multiplet at 7.0, H(3) singlet at 1.4, H(1) multiplet at 1.2, and H(6) doublet at 1.0. Has strong UV absorbance at 260nm
Three Introductory Chemistry students each measured 50.0 mL of 1.0 M NaOH into "double-walled" styrofoam cup calorimeters. Then, Sue added 50.0 mL of 1.1 M HCl to her NaOH solution
for the set of elements Li, O, Ne, and Na which element has the largest atomic radius. Explain any deviation from the expected pattern
Calculate the pH and pOH of the solutions with the following hydrogen ion or hydroxide ion concentrations. Indicate which solutions are acidic, basic, or neutral
an aqueous solution formed by dissolving 1.62 grams of anhydrous aluminium chloride in 50.0 grams of h2o has a freezing
The enthalpy change for the oxidation of styrene, C8H8, is measured by calorimetry. C8H8(l) + 10O2(g) ? 8CO2(g) + 4HOH(l) ?rH = -4395.0 kJ/mol How much heat in kJ is required to oxidize 25.0 g of styrene?
make a reversible isobaric expansion to state B: (V=44.8L). make a reversible isochoric expansion to C: (p=0.5atm), and finally makes a reversible isothermal compression back to A.
The solubility product Ksp for silver iodide is 1.5X10%u221216 at 298K. calculate the osmotic pressure of a saturated aqueous solution of silver iodide at this temp. you may assume that the solution behaves ideally.
what is the main difference between, 2s or 3s or 4s orbitals, or 2p, 3p or 4p. is it just that they are bigger?
What is the percent change in the volume of a balloon if the air inside it is cooled from 67C to 47C?
A vessel contains 0.90g liquid H2O in equilibrium with water vapor at 30C. At this temperature, the vapor pressure of H20 is 31.82 torr. What volume increase is necessary for all of the water to evaporate'
A gas expands and does P-V work on the surroundings equal to 261 J. At the same time, it absorbs 216 J of heat from the surroundings. What is the change in energy of the system?
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