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The central atom in a molecule has three regions of high electron-pair density. What type of hybrid orbitals are formed by the central atom?
A) sp
B) sp2
C) sp3
D) sp3d
E) sp3d2
What is the percent change in the volume of a balloon if the air inside it is cooled from 67C to 47C?
A 4.63 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51?C.
If silicon, atomic number 14, combines with chlorine, atomic number 17 what is the most likely formula based on your knowledge of the periodic nature of the elements
What volume of a 3.00 M solution of phosphoric acid is needed to react completely with 75.0 mL of a 2.58 M solution of calcium hydroxide?
A sample of alkaline earth metal carbonate (MCO3:.250g) was added to 10mL HCl (.4M). Carbon dioxide gas evolved out from the solution. after reaction was completed, the solution was titrated back with NaOH solution (3.05mL;.15M)
If a 0.10M aqueous weak acid solution has a pH of 2.50 what percentage of the acid is dissociated
If a sample containing 3.00 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
Balance the equation in acidic solution and determine how much of a 0.850 M K2Cr2O7 solution is required to completely dissolve 5.25 g Cu.
A cylinder contains 12.0l of air at a total pressure of 41.4psi and a temperature of 30c. How many moles of gas does the cylinder contain
Conjugate Pairs of Acids and Bases, What is the base if the acid is H2PO4- and the equation of the pair?
Dolomite is a mineral consisting of calcium carbonate (CaCO3) and magnesium carbonate (MgCO3). When dolomite is strongly heated, its carbonates decompose to their oxides (CaO and MgO) and carbon dioxide is expelled.
During an experiment, a student adds 1.05 g of calcium metal to 200.0 mL of 0.75 M HCl. The student observes a temperature increase of 17.0 °C for the solution
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