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A 4.61*10^-3 mole sample of HY is dissolved in enough H20 to form .086L of solution. If the pH of the solution is 2.64, what is the K_a of HY?
Without using equations can you explain how heat capacity and entropy are related
After 200 seconds has passed, what is the concentration of sulfates in the drinking water sample.
How much heat is absorbed or released in the reaction of 20.0 g of NH3 with sufficient oxygen to produce NO(g) and H2O(l)? 4 NH3(g) + 5 O2(g) g? 4 NO(g) + 6 H2O(l) ?H = -1168 kJ A
1. given the following heat of formation values calculate the heat of reaction forc3h8g o2greg co2g h2oldhf values in
dinitrogen monoxide gas and 3.41g of carbon dioxide gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction of each gas. Be sure each of your answer entries has the correct number of significant digits..
Calculate the number of grams of sulfuric acid in 0.440 of battery acid if the solution has a density of 1.34 and is 39.1 sulfuric acid by mass.
Looking at the effect of ionic strength on activity coefficients, why would the initial slope for Ca2+ be steeper than that of K+
A mixture of CaCO3 and CaO weighing 0.680 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.489 g.
When the electron cloud of a molecule is easily distorted, the molecule has a high ?
Xenon is a gas found in some automobile headlights. The density of xenon at room temperature and pressure is 5.3 g/L. What is the mass, in pounds, of 1.00 quart of xenon
adiabatic expansion back to its initial temperature, (c) reversible isothermal compression back to 1.00 atm. Calculate q, w, delta U, and delta H for each step.
An aqueous antifreeze solution is 48.5% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.062 g/cm3. Calculate the molality, molarity and mole fraction of ethylene glycol
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