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Explain why the bond between boron and Cl in the molecule BCl3 is shorter than would be expected from a single B-Cl bond.
A sample of calcium carbonate absorbs 45.5 J of heat upon which the temperature of the sample increases from 21.1 degrees celcius to 28.5 degrees celcius.
a 9.528 quantity of zinc was allowed to react with 40.00 of sulfuric acid that had a density of 1.3028 . the reaction
Calculate the pH of a buffer that is 0.158 M HClO and 0.099 M NaClO. The Ka for HClO is 2.9 x 10-8
the excess I3- was titrated with 50.00 ml of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
A reaction in which A, B, and C react to form products is zero order in A, one-half order in B, and second order in C. By what factor does the reaction rate change if [A] is doubled (and the other reactant concentrations are held constant)
What is the osmotic pressure of a solution prepared by dissolving 4.00 g of CaCl2 in enough water to make 540. mL of solution at 28.5°C?
The most accurate values of absorbance are obtained in the range of A = 0.3-2. Which of the following reasons account for lowered accuracy at higher or lower absorbancy values? (Check all that apply).
Using heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following. calories to condense 135 g of steam at 100^{circ}{rm C} and to cool the liquid to 15^{circ}{rm C} (two steps)
Determine the final concentration if A 134 ml portion of that solution is diluted using 147 ml of H 2 O?
q. determine what is the mass of gasoline in tank of your cars if it is filled to its capacity of 15.0 gallons given
When gaseous nitrogen,hydrogen & ammonia are mixedin a closed vessel at room temperature no apparent change in the concetrations of regardless of the original amount of gases.
mtbe is a fuel addictive for gasoline to boost the octanerating. it increases the oxygen content which reduces co
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