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A student prepares a standardized solution of sodium hydroxide by the following procedure. The student first prepares a saturated solution of sodium hydroxide using freshly distilled or deionized water. She measures about 5 mL with a graduated cylinder and dilutes to 1 L in a plastic bottle with freshly distilled or deionized water to make a solution that is about 0.1 M. To determine the exact concentration she puts the NaOH solution in a buret and titrates a carefully-weighed pre-dried solid acid of known molar mass. She records the volume of NaOH needed to neutralize it and repeats the process several times to determine the concentration of the NaOH solution. She calculates the concentration and uncertainty in the concentration of the NaOH from the titration data.
The concentration of saturated NaOH is 50.0% w/w and the density is 1.52 g/mL. If exactly 8.50 mL were diluted to 1.000 L, what would be the concentration?
Consider the weak acid, with a Ka = (4.40x10^-4). In the titration of 25.00 mL of a 0.01000 M solution of the acid with 25.00 mL of a 0.01000 M solution of NaOH
Why is the theoretical maximum final temperature reached by the water in a calorimeter always slightly higher than the highest recorded temperature
1.00 x 10-2 M Mg(NO3)2 and 250 ml of 1.00 x 10-1 M NaF.Calculate the concentrations of Mg2+ and F- at equilibrium with solid MgF2 (Ksp of MgF2 = 6.4 x 10-9).
A mixture of CO, CO2 and O2 is contained within a 275 mL flask at 0C. If the total pressure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr, what is the partial pressure of O2?
Gas stoichiometry and Percentage of calcium carbonate in the sample
calculate the ph at the equivalence point for the titration of 0.10 M NH3 with 0.10 M Hcl. the Kb for NH3 is 1.8 10^-5.
The total pressure of the mixture is. 650 mmHg. What are the partial pressure of each of the gases ? He, and Xe
If 25.0 grams of potassium chlorate decomposes, how many grams of gas are released as a product?
If 12.0 g of O2 is required to inflate a balloon to a certain size at 27 OC what mass of O2 is required to inflate it to the same size (and pressure) at 5.0 oC.
How many grams of the solid can be formed from 286 grams of calcium nitrate and 136 grams of Phosphoric acid?
Elements, which has the largest first ionization energy and equation correctly represents the first ionization of calcium?
which solution can conduct an electrical current?
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