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Question 1
a) What is the concentration of Ca2+ in a saturated solution of CaF2 in pure water, given that Ksp = 4.0 x10^-11?
Write the chemical equation for this reaction.
b) What is the concentration of Ca2+ in a saturated solution of CaF2 in 0.361 M NaF?
Write the chemical equation. SHow your use of the ICE table.
c) Without doing any calculations, would you expect the solution to be in part b) to be more acidic, basic, or neutral? Explain why it would be acidic, basic, or neutral by writing the chemical equation.
How can silver get dirty without being used and how to clean
what is volume of a 0.62 mol sample of gas at 10.6 and a pressure of 1.05
1. Why is the word capacitance sometimes called a “misnomer”?
2. We sayu that power is “dissipated” in a resistor. To dissipate is to use, or to waste, or to squander. What is “used” when charge flows through a resistor?
3. When demand for electric power is high, power companies sometimes reduce the voltage, thereby producing a “btrown –out”. What is being saved?
What is the percent by mass of O in the compound C6H12O6
Classify (name) the product when the ‘oxime’ used in Beckmann rearrangement reaction is derived either from ‘ketones’ or from ‘aldehydes’, individually. b) What is the role of nitrobenzene in the skraup synthesis of quinoline
A sample of french fried potatoes weighing 100.0 g was extracted with the volatile
organic solvent hexane. After separation and evaporation of the hexane, 6.25 g of
cooking oil was recovered.
What is the freezing point depression of an aqueous solution that contains 3m of ionic solute CaCl2 per 1 kg of water. The freezing point depression constant for water is -1.86 degree Celsius per mole (* CaCl2 dissociates into 3 ions)
calculate the volume that will be occupied by 20.0g carbon dioxide at 25 degree celcius and 1.25 atm.
To make a solution, 38.7 g of a nonelectrolyte is dissolved into 218 g of water. The freezing point of the solution is measured to be -5.53°C. Calculate the molar mass of the solute.
