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If a 1.443 gram sample of metal is reacted with excess oxygen to yield 1.683 grams of the oxide M3O2 M being the metal Compute the atomic mass of the element M and identify the metal.
Uric acid dissociates as shown in the figure at the right with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated and unprotonated forms. A urine sam..
A filtration could be very time consuming if it were not aided by a gentle suction which is developed by:
A 0.1293 g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 1769 J/°C. The calorimeter contains exactly 261 g of water, and the temperature increases by 1.126°C. Calculate the heat given off by ..
what is the volume of co2 that can be removed using a 2.6 kg sodium peroxide cartilage? evaluate at stp. temp 0 degrees C and 1atm pressure.
A wine-dispensing system uses argon canisters to pressurize and preserve wine in the bottle. An argon canister for the system has a volume of 29.1mL and contains 36.6g of argon.Assuming ideal gas behavior
calculate the value for E for the cell at 25oC (b) A current is drawn from the cell until 1.20 g of silver have been deposited at the silver electrode. Calculate the value of E for the cell at that stage of operation.
What would you use to prepare a buffer system with a pH of around 4.2. What would you use to make a buffer with a pH of around 9.2? Describe the process you used to choose the correct buffer for each pH.
List a balanced chemical equation for each of these chemical reaction types and explain how it is used
Using formal charges, draw the resonance form from among all the Lewis structures that is most important in describing BeCl2
Does a precipitate form? Show all calculations. Calculate the concentration of each ion at equilibrium.
Calculate the sodium ion concentration when 80.0 mL of 3.2 M sodium carbonate is added to 25.0 mL of 2.3 M sodium bicarbonate.
Compute the enthalpy change, for this reaction per mole of solution and A calorimeter has water of 22.0 grams at the temperature of fifteen degree celsisu
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