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A solution is made by dissolving 25.5 grams of glucose (C6H12O6) in 398 grams of water. What is the freezing-point depression of the solvent if the freezing point constant is -1.86 °C/m? Show all of the work needed to solve this problem.
Based upon the intermolecular forces present, rank the following substances according to the expected boiling point for the substance. Rank from highest to lowest boiling point. To rank items as equivalent, overlap them. HCl, NaCl, N2, H2O
Based on the molecular formula, determine whether each of the following is an alkane, alkene, or alkyne. (Assume that the hydrocarbons are noncyclical and there is no more than one multiple bond.)
The rate constant for the reaction 2HI(g) -> H2(g) + I2(g) doubles on raising the temperature from 683K to 698K. What is the activation energy fro this reaction in kJ/mol
an unknown salt is either nacn nac2h3o2 naf nacl or naocl. when .100 mol of the salt is dissolved in 1.0 l of solutionk
the standard reduction potential for the cu2+/cu redox couple is +.34V; that for h2o/H2, OH- at a ph of 7 is -.41V. For the electrolysis of a neutral 1.0M CuSo4 solution, write the equation for the half reaction occuring at the cathode at standard..
A reactant R is being consumed in a first-order reaction. What fraction of the initial R is consumed in 4.0 half-lives
Calculate the weight of water required to steam distill 500 mg of bromobenzene at 95 degree Celsius. The vapor pressure of water at this temperature is 640 torr; that of bromobenzene is 120 torr
What would be the effect of increasing the temperature of a gas chromatography column during the analysis of a gasous mixture if isothermal chromatography is done
How many moles of sodium bicarbonate are contained in 10mL of a 10% aqueous solution
a 10.0l container of helium gas with a presure of 250mmhg at 0 degrees celsius is heated to give a pressure of
What do you think the small piece of filter paper accomplishes when placed on the copper Cu
The heat required to raise the temperature of a large cup of water (for coffee) from room temperature to boiling is approximately 100 kJ. Express this quantity of heat in kilocalories and British thermal units. Show your calculations.
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