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Answer the following questions, include an explanation, balanced chemical equations where appropriate. Calculate the concentration of NaOH solution. Include calculation for each trial and average.? Mass KHC8H4O4 grams: Trial #1( 0.502g), Trial# 2 (0.500g), Trial# 3( 0.500g) Final buret reading, mL: Trial # 1 (16.80mL) Trial #2 (16.61mL), Trial # 3 (16.88 mL) Initial buret reading, mL Trial # 1-3: all (0.00 ml) Volume of NaOH used, mL Trial # 1 (16.90ml) Trial # 2 (16.61ml) Trial # 3( 16.88ml)
A compound has 2 ionizable groups, with pKas of 6.2 and 9.5. A 1.0 M solution of this compound (100 mL total volume) is found to have a pH of 6.8. A biochemist adds 60 mL of 1.0 M HCl to this solution. The solution pH is now:
Calculate the mass of nitrogen dissolved at room temperature in an 83.0 {rm L} home aquarium. Assume a total pressure of 1.0 {rm atm} and a mole fraction for nitrogen of 0.78.
For a solution having 1.00 X 10^-3 equivilants/L total alkalinity (contributions from HCO3-, CO3^2-, and OH-) at [H+] = 4.69 x 10^-11, what is the percentage contribution to alkalinity from CO3^2-
What is the concentration of the compound in the cuvet? What is the concentration of the compound in the 10-mL flask?
Why is it important to the place the thermometer bulb at in the lower part of the Hickman still head. What will happen if you place it either a)too low or b)too high in the condenser
A solution to replace potassium loss contains 40.mEq/L each of K+ and Cl-. How many moles each of K+ and Cl- are in 1.5L solution
Why is sodium hydroxide added to the solution of thiamine hydrochloride
draw the structure of the expected dichlorocarbene adduct of methyl methacrylate. another product could have been obtained. It is the chloroform adduct to the double bond (Michael type reaction). what would this structure look like.
In an ionic compound, the size of the ions affects the internuclear distance (the distance between the centers of adjacent ions), which affects lattice energy (a measure of the attractive force holding those ions together).
A 50.00 mL sample of the solution (1L of 0.01000M solution requires 2.14g of potassium iodate), mixed with 2 g of potassium iodide and 10.00 mL of (H_{2}SO_{4}), is fully titrated with 38.50 mL of sodium thiosulfate. What is the concentration of th..
If the heat capacity of the calorimeter is 85 JK , and the density of the liquid -1 is 2.34 gmL , what is the specific heat capacity of the unknown liquid?
What quantity of heat would be evolved if 75.00g of mercury (Hg=200.59), (O=16.00) was burned in oxygen?
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