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What type of energy, kinetic or potential, is contained in chemicals? What aspect of chemicals is changed during a chemical reaction such that reactions relate to chemical energy?
Draw the structures for and name and classify as primary, secondary, or tertiary all the isomeric amines
How much energy is released in (kJ) in the fusion reaction 2^H to yield 1 mol of 3^He? The atomic mass of 2^H is 2.0141 amu, and the atomic mass
Ammonia is made industrially by reacting nitrogen and hydrogen under pressure, at high temperature, and in the presence of a catalyst. The equation is N2(g)+3H2(g)---->2NH3(g). If 4.0mol of H2 react, how many moles of NH3 will be produced.
How long must a current of 0.75 A pass through a sulfuric acid solution in order to liberate 0.100 L of H2 gas at STP
A solution of 120 mL of 0.150 M KOH is mixed with a solution of 260 mL of 0.200 M NiSO4. How many grams of the precipitate can be formed?
dissolved in water to produce a 0.0172 M solution. The pH of the resulting solution is 2.34. Calculate the Ka for the acid.
Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br
For which of the following transitions would a hydrogen atom absorb a photon with the longest wavelength? a) n=1 to n=2 b)n=2 to n=4 c) n=5 to n=1 d) n=7 to n=6 e) n=5 to n=6
World energy supplies are often measured in the unit of quadrillion British thermal units (1012 Btu), generally called a "quad." In 2015, world energy consumption is projected to be 5.81 ×1017kJ.
Briefly explain the circumstances under which a mixed solvent recrystallization method would be used to recrystallize a given compound.
The solubility of borax at roomp temperature is about 6.3 g/100 mL. Assuming the formula of borax to be Na2B4O5(OH)4 * 8H2O ( Molar mass = 381.37g/mol), What is the molar solubility of borax and what is the ksp of borax at room temperature
A buffer that contains 0.511 M of a base, B and 0.897 M of its conjugate acid BH+, has a pH of 9.79. What is the pH after 0.00514 mol of HCl are added to 0.593 L of the solution
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