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Arrange these aqueous solutions, each 10% by mass in solute, in order of increasing freezing point and boiling point. Explain your reasoning.
- Glucose (C6H12O6)
- Sucrose (C12H22O11)
- Sodium nitrate
- Calcium Chloride
Calculate the pH of 0.40 M KNO2. What is the concentration of HNO2 in the solution
Write a balanced equation with phase changes for an electrochemical cell that has a copper cathode immersed in a solution of cu+2 ions and a lead anode immersed in a solution of Pb+2 ions
A buffer initially contains 0.10 mol acetic acid and 0.13 mol of sodium acetate in 1.00 L. 0.02 mol of potassium hydroxide is added to the buffer
Why might your sample not have the same melting range as either of the known compounds, given that it must be one of them?
A weak acid (HA) has a pKa of 4.904. If a solution of this acid has a pH of 4.356, what percentage of the acid is NOT ionized
how many grams of cacl2 should be dissolved in 500 ml of water to make a .20 m solution of calcium
Ionizable protons are in rapid equilibrium and so you can think of an amino acid having a relative charge between 0 and 1. Plot the relative charge of glutamate as a function of pH
Label each bond in the following molecules as polar or non polar (make sure you are describing the bond not the molecule). CH4
When 100 mL each of 2.0 × 10-4 M Ca2+ and 2.0 × 10-2 M F- are mixed, what is the remaining Ca 2+ ion concentration and is precipitation complete. The solubility product constant of CaF 2 is 5.3 × 10-9.
My lab is of an iodine clock reaction. I am being asked to calculate the initial rates for experiments 1, 2, and 3 from delta [S2082-]/ delta time. I know how to use the initial rate method however I am confused on how to obtain the initial concen..
What is the product of the reaction. It always seems to lose format after I post. The the CH3 is attached to the last CH. and CH3I (excess) is suppose to be above the arrow.
Consider the reaction 5Br^- (aq) + BrO3^-(aq)+ 6H^+(aq) ---> 3Br2(aq) + 3H2O(l) The average rate of consumption of Br^- is 1.15×10^?4 M/s over the first two minutes. What is the average rate of formation of Br2 during the same time interval
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