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1) If 0.2500 grams of potassium sulfate react with an excess of barium chloride, how many grams of barium sulfate will be produced?
2) What two things are done to maximize the size of the BaSO4 crystals?
3) In this experiment how are the two products separated after the reaction is completed? Describe where each product is located at the end of the separation.
4) A student reacts 0.3000 grams of a sulfate-containing unknown with excess barium chloride. If 0.6500 grams of barium sulfate is produced, what is the percentage sulfate in the unknown?
why would the chemiluminescence be more pronounced than with the flask stoppered? Why is the chemiluminescence even more pronounced with the ferricyanide/hydrogen peroxide mixture?
A gas is confined to a container with a massless piston at the top.A massless wire is attached to the piston. When an external pressure of 2.00 rm atm is applied to the wire, the gas compresses from 5.90 to 2.95 L. When the external pressure is in..
It requires 20.65 mL of 0.3000 M NaOH solution to titrate both acidic protons in 40.00 mL of the tartaric acid solution Write the net ionic equation.
A gaseous mixture of O2 and N2 contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 805 mmHg ?
To calculate the concentration of protein is it 10/990 or 10/1000? And does the original concentration of solution even matter when calculating the solution concentration?
What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of ethanol in 53.6 g of water?
What is the molar mass of the unknown acid? B) As the acid is titrated, the pH of the solution after the addition of 15.00mL of the base is 9.46. What is the Ka for the acid?
At 0.0oC, if the volume of air is 1.5 mL and the pressure of the atmosphere that day is 735 mmHg, what is the number of moles of air?
What does the volume correction constant (b) in the van der Waals equation represent? Why is b for helium small (b = 0.0238 L /?mol) compared to b for decane (C10H22, b = 0.3043).
if a sample of gas has fixed volume, and under a standard atmosphere of pressure, if its temperature is raised from 20 degrees celsius to 40 degrees celsius
Methanol, ethanol, and n-propanol are three common alcohols. When 1.00 g of each of these alcohols is burned in air, heat is liberated. Calculate the heats of combustion of these alcohols in kJ/mol.
Identify the rate determining step, reaction intermediates and the experimental rate law (intermediates can not be in the rate law)
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