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In techniques like AAS, there needs to be a calibration curve run prior to determining quantitatively how much of an ion is present. How could a qualitative technique like the ones in the lab HELP make the quantitative technique go faster?
How is the concentration of Cl determined by mercuric nitrate? Is there a color change at various levels? (similar to the Cl test for swimming pools and you'd have to match a particular color to a particular concentration?)
Calculate the pH of a buffer made by mixing 50.0mL of 0.10M acetic acid (HC2H3O2) with 50.0mL of 0.10M sodium acetate (NaC2H3O2)
Why do you think we need to convert the calcium carbonate to calcium chloride befoe we do our EDTA titrations? What specific condition in our titrations require this?
The temperature remains unchanged. Determine the final pressure of the system of two tanks.
Specific heat of ice: 2.09g*c Specific heat of liquid water: 4.18j/g*c Enthalpy of fusion: 334j/g Enthalpy of vaporization: 2250j/g
The combustion of butane produces heat according to the equation 2C4H10(g) + 13O2(g) -> 8CO2(g) + 10H2O(l) ->H°rxn = -5,314 kJ/mol What is the heat of combustion per gram of butane
What is the molarity of a solution prepared by dissolving 72.0 g of HCI in enough water to make 500 ml of solution.
High blood levels of triglycerides are thought to be partially responsible for clogging of arteries, heart attacks, and strokes. A female had a blood test that gave a high triglyceride level
A mixture consisting of 2.50×10!3 g of O2, 3.51×10!3 mol of N2, 4.67×1020 molecules of CO are placed in a vessel with a volume of 4.65 L at 15.4°C.
Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25°C.
Calculate the average speed of an oxygen gas molecule, O2, at 21.0 degrees Celsius. Express your answer numerically in meters per second.
Compute the a)molarity of the solution, b)molality of the solution, c) mole fraction of Ammonia.
What is the molarity of Cl- in a solution made by mixing 37.5 mL of 0.100 M NaCl with 54.0 mL of 0.100 M KCl?
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