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If you pipetted 50.00 mL of an unknown brine and titrated it with 37.64 mL of 0.1024 M silver nitrate solution. Calculate the ppm salt (NaCl) in the sample.
Consider a saturated solution of calcium fluoride in 0.075 M potassium nitrate. Complete the following tasks, and then answer the question. (Note: Your textbook may not employ the terms Kspo and Ksp'. Please refer to the lecture notes.)
If all of this O3 is converted to oxygen, O2, at the same temperature and pressure then what will be the volume of the oxygen formed?
A 10mL sample of aquarium water was treated with reagents to form a colour, and after dilution to 100 mL was found to have an absorbance of 0.162. calculate the concentration in ppm of nitrite in the aquarium water.
The solubility of O2 (g), in water at 25°C is 3.16 mL/100 g H2O when the gas pressure is maintained at 1 atm. What pressure of O2 (g) would be required to produce a saturated solution containing 10.9 mL/100 g H2O?
Calculate the equilibrium constants of the dissociation and the standard enthalpy of dissociation at the mean temperature.
Given that the most common mineral in limestone is calcium carbonate, describe how these limestone objects are corroded by the sulfuric acid in polluted air. What chemical reaction is involved here?
When 100.g Mg3N2 reacts with 75.0 g H2O, 15.0 g of NH3 is formed. What is the % yield?
How many grams of .49% wt% aqueous HF are required to provide a 25% excess to react with 25 mL of .023 M Th^4+ by the reaction Th^4+ + 4F^- --> ThF4
In a particular sample, the C13 NMR spectrum showed a signal 25ppm and another signal at 72.3 ppm. if the reference frequency for C13 on the instrument were 25.1 MHz what is the difference between the frequency of each signal and the reference fre..
What minimum OH- concentration must be attained (for example adding NaOH) to decrease the Mg2+ concentration in a solution of Mg(NO3)2 to less than 1.1e-10 M
Describe the movement of gas particles. Compare the shape and volume of a solid and a gas. Gases are easily compressed. What danger is associated with this property of gases.
redraw it as a zwiterrion a neutral molecule with a positive and a negative electrical charge (n.b. not dipoles) at different locations within that molecule.
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