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How would you use an experimental distillation curve to determine the percent, by volume, composition of an unknown mixture?
In biochemistry laboratories, solutions of sucrose (table sugar, C12H22O11) are used in high speed centrifuges to separate the parts of a biological cell.
The contents of one 80. lb bag of topsoil will cover 30. square feet of ground to a depth of 1.7 in. What number of bags are needed to cover a plot that measures 600. by 700. m to a depth of 1.5 cm.
How many ml of a 2M HCl are required to neutralize 200 ml of a 0.4 M solution of NaOH?
sulfur dioxide was allowed to effuse through a small opening under constant pressure conditions. It required 179 s for 1.00 L of this gas to effuse. Calculate the effusion time of arsine (AsH3) under identical experimental conditions
Silver chromate is sparingly soluble in aqueous solutions. The Ksp of Ag2CrO4 is 1.12x10^-12. What is the solubility (mol/L) of silver chromate
A microwave oven operates at 2.50GHz. What is the wavelength of the radiation
what is the freezing point of an aqueous solution that has 25.0 g of glucose, C6H12O6 per 100.0g H2O (Kf=186C/M)
At 25ºC the solubility product constant, Ksp, for magnesium phosphate, Mg3(PO4)2, is 1.0´10-24. The solubility product constant for magnesium fluoride, MgF2, is 7.0´10-11.
A solution of calcium ions contains 7 meq/250. cm3 of calcium ion. How many moles of calcium ion does this solution contain
The k1 is on top of the right pointing arow and k2 is below the left pointing arrow and the arrows are like they are in equilibrium. The k3 is above the lone arrow in the second reaction. In the find expression part the N02 is a subscript of P
when 50.0 mL of 0.5M NaCl solution is combined with 100.0mL of 0.20M Na2SO4 solution, what is the concentration of sodium ions in the final solution.
Nitromethane has a relatively high boiling point of around 100 c. Which of the following intermolecular force is not present in pure liquid nitromethane and why.
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