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State the heat of vaporization of water is 40.66 kJ/mol. Explain how much heat is absorbed when 1.98 g of water boils at atmospheric pressure?
what are the resonance structures and intermediates in the formation of bromoacetanilide from the reaction of
What ions, atoms, or molecules are present after the following substances mix with water. (Do not forget solubility rules). a. LiOH b. O2 c. Mg(NO3)2
Calculate the equilibrium constant for the reaction. The standard enthalpy change delta H, for a strong acid-strong base reaction is -57.8k J. Determine the standard entropy change delta S for the reaction at 25 degrees C.
Calculate the concentration of Cu2+ ion in this standard solution if the stock solution was 0.0200 M Cu2+.
the reaction of copper(I) sulfide with oxygen gas as follows: Cu2(s) + O2(g) ? 2Cu(s) + SO2(g) If 0.330 kg of copper(I) sulfide reacts with excess oxygen, what mass of copper metal may be produced
For each of the following pairs of elements state whether the binary compound they form is likely to be ionic or covalent as well as write the empirical formula and name of compound
the air in the laboratory was measured with a barometer to be 7.20 x 10 squared mm Hg. what is the laboratory air pressure in atm.
In an acid/base titration, knowing that it took 13.14 mili litres of 0.1016 M sodium hydroxide, NaOH to reach the first endpoint of the titration,) from this information, mols of Phosphoric acid present in the sample is 1.335 mols.
When cobalt hexahydrate reacts with chloride to form cobalt chloride, a change in the geometry occurs about the cobalt center of each species. What is the change
A toothpaste contains 0.24% by mass of sodium fluoride used to prevent caries (cavities) and 0.30% by mass of triclosan (C12H7Cl3O2). A PRESERVATIVE + ANTIGINVITIS AGENT.
What is the simplest explanation of why the 45kD and the 90kD proteins copurified the column. What would be an alternative explanation
a reaction that establishes equillibrum with almost no reactants pressent will be one of the following. a) exergonic reaction b) has a negative G degree c) has a large keq d) all of the above
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