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Calculate the pH of a solution that results from mixing 32.8 mL of 0.157 M dimethylamine ((CH3)2NH) with 44.0 mL of 0.144 M (CH3)2NH2Cl. The Kb value for (CH3)2NH is 5.4 x 10-4
Calculate the molarity of each of the following solutions. (a) 29.0 g of ethanol (C2H5OH) in 545 mL of solution
What is the pressure of the water vapor at a temperature of 250.0 degreee Celcius.
The element Uranium found on earth is most likely formed by which nucleosynthetic process
The speed of a photon is 4.5x10^5 ms^-1. If the uncertainty in its momentum is to be reduced to .01 percent, what uncertainty in its location must be tolerated
Thermochemistry : Comparing Heat Capacity of Bricks and Water, A house is designed to have passive solar energy features. Brickwork incorporated into the interior of the house acts as a heat absorber. Each brick weighs approximately 1.8 kg
Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 21 degrees Celcius.
What is the molality of a solution that contains 2.93 grams of urea (molar mass = 60.0 g/mol) in 141 grams of benzene.
The molar mass of the substance was found to be about 300g/mol. what is the molecular formula of the unknown powder? was the substance cocaine?
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare profession..
At 25C what is the hydronium ion concentration of (a) 0.1 M chloroacetic acid Ka=1.36 X10-3 (b) 0.1 M sodium chloroacetate
If the concentration of an acid in solution is 2.2 times larger than the concentration of its conjugate base, and the pH of the solution is 3.5, what is the pKa of the acid?
The simulated APT spectrum of a compound with the molecular formula C4H8 is shown below. Draw a structure that is consistent with this data.
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