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How many liters of the antifreeze ethylene glycol would you add to a car radiator containing 6.50 L of water if the coldest winter temperature is -28.0 degrees Celsius? Calculate the boiling point of this water-ethylene glycol mixture. (Then density of ethylene glycol is 1.11g/mL)
Liters of antifreeze _______ L
Boiling point of solution_________ Celsius degrees
What volume of glacial acetic acid (d= 1.06 g/mL) and what weight of solid potassium acetate are required to prepare 5 liters of 0.2 M acetate buffer, pH 5.0
Equal volumes of 1 x 10-4 M solutions of Cd2+ and CO32- ions are mixed in one flask and equal volumes of 1 x 10-4 M solutions of Ag+ and CrO42- ions are mixed in a second. Which substances precipitate given that the Ksp values of CdCO3 and Ag2CrO4..
Caffeine crystals always contain at least one molecule of water per caffeine molecule. Draw chemical structures to explain why a water molecule might be essential to producing a stable crystal of caffeine.
how many moles of NaCl would be made by combining 20,000 moles of Na with 2 moles of Cl
the reactant concentration in a zero-order reaction was 6.00times10-2 it m after 185 s and 1.00times10-2 it m after 330
a student prepares benzoic acid by hydrolying 6.47g of methyle benzoate (FW 136.15g/mol) using excess sodium hydroxide. If the student recovers 3.71g
In which conversion is an oxidizing agent required? a. CH3CH2CH2CH3
What is the minimum number of 1.0 L bottles of concentrate needed to make the wine have the correct level of sugar. Remember to show all work, units and assumptions.
What is the pH of a solution formed by dissolving 0.100 mol of an acid with a Ka of 1.750x(10 to the -5th) and 0.200 mol of the sodium salt of the same acid in a total volume of 1.000L
Compare the pH vs volume curve for HCL and acetic acid. discuss any difference in the shape of the curves. Compare theese two curves to one of the curves prepared for the unknow
suppose 50.0 ml of 0.25 m cocl2 solution is add to 25.0ml of 0.350 m nicl2 solution calculate the concentration in
The standard entropy of Pb(s) at 298.15k is 64.80 jk-1 mol-1. assume that the heat capacity of Pb(s) is given by Cp,m (Pb,l)/jk-1mol-1 = 32.51 -.00301 t/k. calculate the standard entropy of Pb (l) at 650 C. calculate delta H for the transformation..
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