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How would the observed molarity of your experiment be affected by the following circumstances. (i.e. would it be higher than the true value, lwer than the ture vaule or remain unchaged?)
a) the potassium hydrogen phthalate is dissovled in more than 50 mL of water.
b) the potassium hydrogen phthalate in the reagent bottle in the laboratory has been left open on a humid day and teh potassium hydrogen phthalate has absorbed some moisture before you removed your sample of the acid.
c) While swirling the flask during the titration, some of the liqu9id splashed out before the end point was reached.
Write the formula for the ion formed when each of the following elements loses its valence electrons?
Analysis with an elaborate instrument indicates that substance A contains two elements. Substance B and substance C react to give a new substance D
A sample of 1.42 g of Helium and an unweighed quantity of Oxygen are mixed in a flask at room temperature. The partial pressure of Helium is 42.5 torr and of oxygen is 158 torr.
Calculate the final Celsius temperature of sulfur dioxide if 0.500 L of the gas at 35°C and 650 mmHg is heated until the pressure reaches
What is the heat capacity of the bomb?(Assume that the quantity of water surrounding the bomb is exactly 2250 g).
What is the molar concentration of a H3PO3 solution if 150.00 mL of the solution was required to neutralize 75.00 mL of NaOH whose concentration was 1.50 molar?
In a saturated solution of lead (II) fluoride the concentration of lead was measured to be .0021 M. What is the value of Ksp for PbF2?
The density of chloroform, a widely used organic solvent, is 1.4832 at 20 . How many milliliters would you use if you wanted 119.0 of chloroform.
Are interested in isolatin menthol from a min leaf. You have pureed 12g of mint leaf and completed steam distillation using 35 mL of water.
If 525 mL of gas at 25 degrees is heated to 50 degrees at constant pressure, calculate the new volume of the sample gas.
Determine the osmotic pressure of a solution that contains 0.010 g of a hydrocarbon solute (molar mass = 340 g/mol) dissolved in benzene to make a 350-mL solution. The temperature is 20.0°C.
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted
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