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A solution is prepared by adding 50.0 ml of 0.050M HBr to 150.0 ml of 0.10M HI. Calculate the concentration of all species in this solution. HBr and HI are both considered strong acids.
A spoon was silver plated electrolytically in a Silver nitrate solution. If 0.750 grams of silver was deposited on the spoon at a constant current of twenty mili amperes, determine how long in hours did the electrolysis take?
Imagine that you have a 7.00 gas tank and a 3.50 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
Describe how you would make 2.35 g of a mixture of sand,clay and ash in the following percentages, respectively : 24.64%, 4.23%, and 71.13%
The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity.
Calculate the mass of PbCl2 that will dissolve in 50 mL of water if the solubility product constant is 1.61*10^-5?
For one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value using n1 = 2, and n2 = 3.
A gaseous mixture of O2 and N2 contains 38.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 365mmHg
Consider the reaction: 2H3PO4=P2O5+3H20 Using the information below calculate the average rate of formation of P2O5 between 10.0 and 40.0 seconds.
Select each of the reactions and observe the reactants taking part in the reactions. Suppose you are carrying out each of these reactions starting with five moles of each reactant. Observe that some reactants are in excess whereas some reactants l..
How many moles of hydronium ion are neutralized by one teaspoonful of Extra strength Maalox plus?
A student was in a hurry to leave the lab and recorded the melting point of the recrystallized trimyristin right after washing the crystals with cold acetone. The melting point range was 46 -50 degrees C. Is this a good result
The decomposition of nitric oxide NO to N2 and O2 is second order with a rate constant of 0.0796 M^-1 S^-1 at 737 C and 0.0815 M^-1 S^-1 at 947 C. Calculate the activation energy.
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