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A solution is made using 12.5 mL of 1.20 M HCNO, 1.13 g KCNO, and enough water to make 225 mL total volume. Find: (A) the pH of this solution and (B) the pH of the solution after addition of 2.5 mL of 3.0 M HCl. Give the chemical equation for the reaction that occurs in (B) to reach equilibrium.
An empty volumetric flask, weighing 60.42 grams, weighed 309.60 grams when filled with water. After emptying the water and drying the flask
The dipole moment of HBr (a polar covalent molecule) is 0.784 (debye), and its percent ionic character is 11.6 . Estimate the bond length of the bond in picometers.
Draw the 3-dimensional structural formula for ® 2 -iodopentane. Use the wedge and dashed line convention. Complete the table below based on whar you know about enantiomers.
Assuming the turbine is well insulated, what is the maximum power that can be generated by the turbine?
The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 10-4 mol/L. A deep-sea diver breathes compressed air with the partial pressure of N2 equal to 3.6 atm.
A 25.0 g sample of pure iron at 85.0°C is dropped into 75 g of water at 40.0°C. What is the final temperature of water-iron mixture?
A 29.0-g sample of water at 260. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Boron often forms compounds that do not comply with the octet rule that are termed electron deficient. BF3, whose structure is shown below on the left, is an example of an electron deficient compound.
the density of an aqueous ethanol solution is .789 g/mol. How many grams of ethanol should be mixed with water to make 225mL to make a 4.5% ethanol solution?
The rate of a first-order reaction is followed by spectroscopy, monitoring the absorption of a colored reactant at 520 nm. The reaction occurs in a 1.48- cm sample cell, and the only colored species in the reaction has an extinction coefficient of..
the molecular orbital theory provide an explanation for the existence of the covalent molecule Na2 in the gaseous state. How would you predict Na2 by the Lewis theory?
CO2 Dissociation by means of electronic excitation. Using Fig. 5-6, calculate the decrease in energy thresh- old of the CO2 dissociation through electronic excitation related to preliminary vibrational excitation
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