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When a particular solid dissolves in water, the solution gets colder. What can you say about the relative magnitudes of ΔH°lattice and ΔH°hydration for this system?
What generalizations can you make about combinations that lead to the formation of insoluble ionic compounds?
How many moles of photons with a frequency of 1.22e14 hz are necessary to produce
Write the net ionic equation for the reaction that occurs when equal volumes of 0.389 M aqueous benzoic acid and ammonia are mixed.
Determine How many moles of Fe 3 O 4 could be formed if 9.00 mol iron react with 12.00 mol Oxygen and determine How many grams of methane is required to form 45.5g CHcl 3 ?
If 15 g of sugar are dissolved in 200 g of water, which of the following terms describes the sugar? A. solvent B. solute C. suspension D. colloid
The specific rotation for enantiomerically pure sec-phenethyl alcohol is 42 degrees. What would the specific rotation of this 93% optically pure sample
Compute the enthalpy change upon converting 36.0 g of ice at -25 °C to water vapor (steam) at 125°C under a constant pressure of 1 atm. The specific heats of ice, water and steam are 2.03 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2OHfu..
If ?T for reaction 1 is determined to be 12.6º C and if ?T for reaction 2 is determined to be 0.6º C, what is the ?H value obtained for NH3 + HCl -› NH4Cl from Hess's Law method?
Calculate the 1) mls of 15M Acetic acid 2) the grams of sodium acetate 3) and the mls of water required to make a 500mM acetate buffer at pH 4.85
Osmium has a density of 22.6 g/cm3. What volume would be occupied by a 21.8 g sample of osmium?
If 315 ml of hydrogen gas is collected over water at 25 degrees C at a total pressure of 742 mm Hg , how many grams of Zn reacted?
The above reaction yields a mixture of two Diels-Alder adducts. In the box below draw the structure of both products.
120.0 mL sample of a 0.81 M H2SO4 solution is diluted with enough water to reduce the concentration of the solution to 0.50 M. What is the volume of the diluted H2SO4 solution.
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