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The molar solubility of Ag2CO3 is 6.8 x 10-6 mol/L in a 0.2 M solution of Na2CO3. What is the Ksp for Ag2CO3?
Zinc metal can be obtained from zinc oxide (ZnO) by reacting the oxide with the element carbon. The products of the reaction are Zn and CO2. What mass of zinc oxide is needed to react completely with 2.22 mol of carbon? Answer in units of g
Find the absolute and relative uncertainty and express each answer with a reasonable number of significant figures.9.2 (+/- 0.7) * [[5.4 (+/- 0.3) * 10^-3] + [5.6 (+/- 0.1) * 10^-3]]
How is the ideal gas law modified to account for the finite volume of molecules? The temperature of the sea bed 60 m below the surface and at the surface are both 20C. A rubber balloon is inflated at the sea bed with 2.0 mole gas neglecting the wo..
what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F? Show work.
Water from a 5-mL pipet was drained into a weighing bottle whose empty mass was 9.974 g to give a new mass of 14.974 g at 26 ºC. Find the volume of the pipet
Determine what is the percent yield of the reaction If 15.0 grams of Nitrogen and 2.00 grams Hydrogen react to produce 1.38 grams of Ammonia?
How many kilocal are required to increase the temperature of 15.6 g of iron from 122 °C to 355°C? The specific heat of iron is 0.450 J/g °C.
What is the pH of a 0.30 M pyridine solution that has Kb=1.9x10^-9? the equation for the dissociation of pyridine is C5H5N5(aq)+H2O(l) >>> C5H5NH(aq)+OH-(aq).
A 1-L flask is filled with 1.30 g of argon at 25 degrees Celsius. A sample of ethane vapor is added to the same flask until the total pressure is 1.05 atm. What is the partial pressure of argon in the flask?
Question- Calculate millimoles and mass of oxalate in the unknown sample from the following data: Mass of unknown sample is 0.5060 grams. Volume of potassium permanganate solution titrated is 30 mL.
A reaction which is second order in reactant B has a rate constant of 1.1*10^-3 L/mole*sec. How long would it take it for the concentration of B to be reduced to 65% of its original value
A sample of H2 gas was prepared according to the balanced equation. A total of 9.95 L of gas has a pressure of 0.979 atm at 15 oC. Calculate the moles of H2 produced.
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