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If a buffer is prepared using equal amounts of acetic acid and sodium acetate predict what the pH of the solution will be.
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure of ClO4-
Silicon has a band gap of 1.1 eV at room temperature. What wavelength of light would a photon of this energy correspond to?
The combustion of 13.2 g of propane, C3H8 (g), liberates 6.6x10^3 kJ of heat. What is the enthalpy change (kJ) for the reaction?
the equation of line determined from a beer's law plot is y=0.195x+0.4. what is the resistance of an unknown water sample if the assumed concentration is 650ohms.
In a Fisher Esterfication Experiment the reaction product was extracted with 5% sodium bicarbonate solution (NaHCO3) in the isolation step. Why?
How many mL of water (density = .997g/ml at 25 degree C) are needed to dissolve 10.0g of NH4NO3 in order to prepare a .100m ammonium nitrate solution?
calculate the molarity of a KCl solution made by disslving 52.5 g of KCl in 250 ml of water?
A penny with a scored edge allows the HCl to react with the internal zinc metal, leaving a shell of unreacted copper. How many moles of hydrogen gas are formed by reacting a penny with excess HCl?
In the titrating vinegar expirment briefly explain if the following errors would result in high or low expermental determination of the molar concentration of ch3cooh
Calculate delta g rxn and e cell for a redox reaction with n=3 that has an equillibrium constant of K
Calculate the concentration of cadmium chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits.
Sodium will react with oxygen to form sodium oxide. Use the formula below to determine how many grams of sodium oxide will be formed if 46 grams of sodium are used in the reaction. 4Na + O2 --2Na2O
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