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A weak acid (HA) has a pKa of 4.904. If a solution of this acid has a pH of 4.356, what percentage of the acid is NOT ionized? (Assume all H in solution came from the ionization of HA.)
A hot-air dryer is used to reduce the moisture content of 1500kg/min of wet wood pulp from 0.75 kg H2O/kg dry pulp to 0.15wt% H2O. Air is drawn from the atomosphere at 28C, 760mm Hg, and 50% relative humidity, sent through a blower-heater, and the..
A 9.70-g piece of solid CO2 (dry ice) is allowed to sublime in a balloon. The final volume of the balloon is 1.00 L at 298 K. What is the pressure of the gas?
Determine how many grams of Hydrogen are required to form 14.01grams of Ammonia and calculate how many grams of ammonia could be formed
When NaOH is added to the reaction mixture, Cu(OH)2 does not immediatly precipitate. What else in the reaction mixture reacts with NaOH before Cu(OH)2 is formed?
Draw a structure for a compound that meets the following description: C4H8O with IR absorption at 3400 cm-1 and no absorption in the 1640-1680 cm-1 range
For the microscale titration between KMnO4 and H2O2 the balanced net ionic equation is 2 MnO4-(aq) + 5 H2O2(aq) + 6 H+(aq) --> 2 Mn2+(aq) + 5 O2(g) + 8 H2O(l)
Why does benzyl alcohol, a primary alcohol, react rapidly in the presence of HCl to form benzyl chloride? If it's primary, shouldn't the reaction be slow?
Does a chemical change occur when you cook an egg? Why or why not? When you fry an egg, it becomes a solid, the heat makes it smoke, and the color changes from clear and yellow to all yellow.
how many CH 3 groups are there, per 1000 C atoms (main chain)? ethylene-propylene rubber (EPR) is completely amorphous you may ignore the ends of the chains
Do the same to show the formation of both elimination products from 2-bromo-2methylbutane (page 208 lists the two products as 2-methyl-1-butene and 2-methyl-2-butene.)
In a precipitate lab, if the step for digesting the precipitate were omitted, what would be the probable consequence of reporting the "percent limiting reactant" in the salt mixture? Explain.
The solubility of oxygen gas in water at 25 °C and 1.0 atm pressure of oxygen is 0.041 g/L The solubility of oxygen in water at 3.0 atm and 25 °C is __________ g/L.
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