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Put about 1/4 teaspoon of salt by itself in the tin can and set over the burner, and assure that you have good ventilation. (You may generate a little smoke.) DO NOT TOUCH THE CAN WHEN IT IS HOT! As soon as you see the first item begin to melt, remove from the heat, using tongs or hot pads. Record your observations in the answer box below -about how long and at which setting it took to melt it.
at 25 degc the equilibrium partial pressures for the following reaction were found to be pa 8.00 atm pb 5.40 atm pc
Calculate the molar solubility of stronium fluoride (SrF2) when dissolved in a 0.0800 M solution of stronium nitrate
For the reaction CH4+202=2H2O+CO2, calculate the percent yield of carbon dioxide if 1000. g of methane react with excess oxygen to produce 2300. g of carbon dioxide.
If 2.00 g of the base form of cocaine are recovered, was the original sample a pure sample or a mixture? If it was a pure sample, was it a compound or an element. If it was a mixture was it heterogeneous or homogeneous
What range of magnetic field strength would be required to cover the mass range between 16 and 625, for singly charged ions, if the accelerating voltage is held constant?
A solution of glycine molecular mass- 75 g/mol is prepared by solubilizing 52 mg of the amino acid into 10mL of water spiked with 7 x 10-4 mol of HCl. Explain what is the pH of the resulting solution
Explain what is the chemical logic of the aconitase reaction. Explicate the logic in terms of expected results when the aconitase step is omitted.
Question- Suppose it took the addition of 12.0mL of 0.01 M potassium oxalate to make 50 mL of a 0.010 M calcium chloride solution cloudy. Calculate the concentrations of the calcium and oxalate ions in the mixture and then calculate the Ksp of cal..
Obviously occurring element X exists in three isotopic forms: X-28 (27.977 amu, 92.21% abundance), X-29 (28.976 amu, 4.70% abundance), and X-30 (29.974 amu, 3.09% abundance). Compute the atomic weight of X
If you have 50 ml of a buffered solution of 0.15M HNO2 and 0.05M NaNO2, how many ml of 0.2M HCl can you add before the pH changes significantly
Problem- Decide whether or not each of the following metals dissolves in 1 M HCl. For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
A 2.00L buffer solution is 0.250M in HC2H3O2 and 0.250M in NaC2H3O2. Calculate the pH of the solution after the addition of 0.100 moles of solid NaOH. Assume no volume change upon the addition of base.
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