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Suppose that you are given four test tubes, labeled A, B, C, and D, each containing a colorless solution. In each of the following questions, indicate which of the solutions included in this experiment could be used to distinguish between the pairs of solutions. In each case, describe the observations you would make and write a net ionic equation for any reaction that would occur.
(a) Test tube A contains 0.1M NaNO3 solution, and Test Tube B contains .1M Ba(NO3)2 solution.
(b) Test tube C contains .1M NaCl solution and Test tube D contains .5M HCl.
A 15.6 mL sample of vinegar, containing acetic acid, HC2H3O2, was titrated using 0.6216 M NaOH solution. The titration required 19.80 mL of the base. Assuming the density of the vinegar to be 1.0 g/mL, what was the percent (by mass) of acetic acid..
a liquid unknown was found to be insolube in water and soluble in cyclohexane and alcohol, and have boiling point of 58C at 670mm Hg. what the substance? what could you do to confirm your answer?
A sample of calcium carbonate absorbs 45.5 J of heat upon which the temperature of the sample increases from 21.1 degrees celcius to 28.5 degrees celcius.
A voltaic cell is based on the reaction Sn + I2 = Sn2+ + 2I-.
A 1.20-L container contains 1.10 g of an unknown gas at STP. What is the molecular weight of the unknown gas?
What is the the molar composition of the products when a stream of CH4 is combusted with 5% excess air if you have 1600 moles per hour of methane being fed into the reactor
"The chains of several cell membrane - bound proteins are known to wind back and forth through the cell membrane, such that some parts of the protein structure are extracellular, some parts are intracellular, and some parts lie within the cell mem..
The following table lists molar concentrations of several ions in seawater. Using a density of 1.022 g/mL for seawater
The first-order decomposition of SO2Cl2 to sulfur dioxide gas and chlorine gas at 320°C has a half-life of 8.75 hr. If one begins with 600. mmHg of pure SO2Cl2 in a 5.00-L flask at 320°C
Climbers sometimes develop Acute Mountain Sickness (AMS) when ascending too rapidly without allowing their bodies time to acclimate to the lower oxygen concentrations in air at high elevations.
Write the half reactions and the blanced equation for the galvanic cell: Ag(s) | AgCl(s) | Cl^-(aq) || Cl^-(aq) | Hg_2Cl_2(s) | Hg(l).
A gaseous mixture of and contains 35.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 585 ?
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