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An ice bag containing 212g of ice at 0°C was used to treat sore muscles. Explain when the bag was removed, the ice had melted and the liquid water had a temperature of 32.5°C.Explain how many kilojoules of heat were absorbed?
What are the frequency and energy of a photon with a wavelength of 900 nm. Report your answers to three significant digits.
How are the neutral particles removed from the Mass Spectrometer. What is the reason for removing neutral particles from the Mass Spectrometer
A 75.0-mL volume of 0.200 M NH3(Kb=1.8*10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 25.0 mL of HNO3.
If the exhaust rate is 80 m 3 per minute, what is the CO emission in grams per kilometer?
A 20.0 ml sample of 0.200 M K2CO3 solution is 30.0 ml of 0.400 M Ba(NO3)2 solution. Barium Carbonate precipitates. The Concentration of barium ions, Ba^2+, in solution after reaction is?
When 50.0 mL of 0.50 M formic acid is titrated with 0.50 M sodium hydroxide, calculate the pH for each of the following: Ka of formic acid = 1.8 x 10^-4 Be sure to account for volume changes at each step.
If the ionization constant of water, Kw, at 40°C is 2.92 x 10-14, then what is the hydronium ion concentration and pH for an acidic solution
You have 100.0 mL of 0.100 M aqueous of each of the following acids: HCN, HF, HCl, and HC2H3O2. You titrate each with 0.100 M NaOH (aq). Rank the pHs of each of the solutions when each are titrated at the equilibrium point, from highest to lowest ..
Explain which you would choose as a starting material to prepare an alkene with the maximum yield.
Atmospheric pressure decreases as altitude increases. In other words, there is more air pushing down on you at sea level, and there is less air pressure pushing down on you when you are on a mountain
What is the form of the intergrated rate law which will produce a strait line if the reaction shown in eq. 14.11 is 0th order with respect to [dye]? 1st order with respect to [dye]? 2nd order with respect to [dye]
Talk about with instance the different modes of coordination of NCS- Do these ligands have dissimilar steric factors. Elucidate by drawing the relevant Lewis structures.
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