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What gas escaped during the sodium bicarbonate washing? Write balanced equations for two reactions that took place during this operation.
How much ice in grams would have to melt to lower the temperature of 51.0 g of water from 65.0*C to 0*C
The Delta G for the freezing of H2O(l) at -10 Celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610J/mol
If solar radiation is 1200 W/m^2 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation. A green leaf has a surface area of 2.75 cm^2 .
How much heat can be obtained by burning 14 pounds of propane? (Remember to look at this from the viewpoint of the surroundings, since the question asks how much heat can be OBTAINED.)
Equal volumes of cold 4.184M NaOH at 20C and warm 4.184M HCl at 77.3C are mixed together in a highly efficient calorimeter. what is the final temperature of the solution
salicylic acid reacts with methanol to produce oil of wintergreen and water. If water is added to the solution, a precipitate is formed. identify the precipitate and explain why it is formed.
Draw three stable, acyclic isomers of C3H6O. Using wet chemistry, show how you can distinguish between these three compounds.
Identify the Lewis acids in the following two equilbrium systems: System A: CO2 + H2O ? H2CO3 System B: Zn2+ + 6H2O ? Zn(H2O)62+ A. A: H2O; B: H2O B. A: CO2
If a sample of 0.188 grams of KCN is treated with an excess of HCL, calculate the amount of HCN formed, in grams.
A solution is prepared by dissolving 20.0 g of K2HPO4 and 25.0 g of KH2PO4 in enough water to produce 1.0 L of solution. What is the pH of this buffer
What is the concentration of Co2 ions at equilibrium? Assume the formation constant of Co(NH3)62 is 5.0× 1031.
The molar heat of neutralization from hydrochloric acid and sodium hydroxide is -57.3 kJ/mol. use this accepted value to predict the heat evolved
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