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Solubility in water in hexane
1) Rand them in order of Relative solubility(1: most soluble, 3: least soluble)
1. Ethanol in Water? in Hexane?
2. Diethyl ether in Water? in hexane?
3. Heptane in water? in Hexane?
2) when mixed water and ether(diethyl ehter), why two layers will form ? Which layer will be top layer why?
3) When mixed with water and dichoromethane(CH2CL2), two layer also form why? and which layer will be top and why?
Li is in row 2 of the periodic table, Na is in row 3, and K is in row 4. How do their row numbers affect how their electron configurations end.
Suppose your thermometer read consistently 1.0 o C lowered throughout both parts in the colligative properties lab. What effect would that have on your experimental value for the molar mass of your unknown solute?
Questions on chemical equations - Write a balanced equation for this reaction. Include the states of matter for each compound.
A student ran the following reaction in the laboratory at 689 K H2(g) + I2(g) 2 HI(g)
Molecular and ionic equations, What would be the proper balanced molecular and net ionic equations for each of these neutralization reactions?
Determine what would you use to prepare 10 ml of 0.2M CaCl 2 from the 20M stock solution and find out which solution is with pH > 7, but is not an Arrhenius base in the strict sense?
What is the concentration of g salt per 100 g water of a saturated solution in which 3.82 g of salt are dissolved in 9.54 g of water?
you have a 30.0 L cylinder of helium at a pressure of 132 atm and a temperature of 24 degrees Celsius. the He is used to fill balloons to a volume of 3.00 L at 1.07 atm and 29 degrees Celsius.
The solubility of compound A in ethanol is 0.80g per 100.0mL at 0oC and 5.00g per 100.0mL at 78oC. What is the minimum amount of ethanol needed to recrystallize a 12.00g sample of compound A.
Many gases are shipped in high-pressure containers. Consider a steel tank whose volume is 65.0L and which contains O2 gas at a pressure of 16,500kPa at 23°C.
Determine the equilibrium concentrations - what are the new equilibrium concentrations of all species.
What is the molar mass of a gas if 0.358 g of the gas occupies a volume of 186 mL at 5.00C and 1.10 atm.
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