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Show all work. Solve using conversion method ONLY
1. 27.89 mL of KNO3 solution in a 46.08 g container was evaporated and the dried, cooled container weighed 49.49 g. (a) What was the m/V% of the solution? (b) What was the concentration of the solution in molar?
2. Explain how to make 200.0 mL of a 3.14 M potassium iodide solution (KI).
3. How many mols of CaCl2 are in 15.0 mL of 0.430 M solution? If you add enough AgNO3 to the CaCl2 solution, what mass of AgCl would it make?
2AgNO3+ CaCl2→2AgCl(s)+ Ca(NO3
4. The molar mass of table sugar (sucrose) is 342.30 g/mol. You put in a pound of sugar (1.00#) to make a gallon of sugar solution (1.00 gal). (a) What is the concentration of the sugar in molar? (b) What mass of sugar would you get if you dried out 134.8 mL of this solution?
How many orbitals correspond to each of the following designations?
Considering the combustion of propane, how many grams of O2 are needed to completely burn 32.1g of C3H8
What is the pH of a solution that is 0.20 M HC2H3O2 and 0.40 M NaC2H3O2? Ka for acetic acid 1.8 x 10-5. Explain
Purine biosynthesis is allowed to take place in the presence of [N15]aspartate, and the newly synthesized GTP and ATP are isolated. What positions are labeled in the two nucleotides?
How might you use 13C NMR spectroscopy to determine if the brominated product is contaminated with some unreacted starting material (during the bromination of trans-cinnamic acid)
Write a Lewis structure for each of the following ions. Assign formal charges to all atoms. If necessary, expand the octet on the central atom to lower formal charge. Draw the molecule by placing atoms on the grid and connecting them with bonds. I..
The addition od 3.16g of this compound to 75 mL of cyclohexane (d= 0.779g/ml) gives a solution with a freezing point of 0.0 degrees Celsius. The normal freezing pt of cyclohexane is 6y.50 degrees Celsius and its freezing pt depression constant of ..
In the purification process, the organic layer is washed sequentially with 2 M NaOH, water, and saturated aqueous sodium chloride. What is the purpose of each of these washes and why is cold 2 M NaOH recommended
What is the final concentration of (in M) 17.2 mL iron(III) chloride solution with an initial concentration of 0.245 M which is diluted with 16.7 mL of solvent? Assume the volumes are additive.
When 3.50 g of is added to 100.00 g of water in a container open to the atmosphere, the reaction shown below occurs and the temperature of the resulting solution rises from 22.00°C to 47.40°C.
the rate constant of a reaction is 4.7 multiplied by 10-3 s-1 at 25degc and the activation energy is 33.6 kjmol. what
Write a chemical equation representing the second ionization energy for lithium. Use e- as the symbol for an electron.
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