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Ethanol, C2H5OH, and carbon dioxide, CO2, have approximatelythe same molecular weight, yet carbon dioxide is a gas at STP andethanol is a liquid. How do you account for this difference in physical property?
What is the value of Ecell for a concentration cell that combines silver electrodes in contact with 0.10 M silver nitrate and 0.00003 M silver nitrate solutions? ( E = + 0.80 V for Ag/Ag+)
what is the pH of a buffered sysem made by dissolving 17.42 g of KH2PO4 and 20.41 g of K2HPO4 in water to give a volume of 200.0 mL
Calculate the maximum volume in mL of .15M HCl that each of the following anti-acid formulations would be expected to neutralize. Assume complete neutraliation.
From the point of view of chemical equivalence, Explain how many different types of protons and how many different types of carbons are there in each of these structures
At an underwater depth of 245ft, the pressure is 8.39atm. What should the mole percent of oxygen be in the diving gas for the partial pressure of oxygen in the mixture to be 0.21 atm, the same as in air at 1 atm?
15.0 grams of an unknown sugar was dissolved in water and the final volume of the solution was brought up to 1.00 L. The osmotic pressure of this solution was determined to be 2.44 atm at 25°C. Which of the sugars below was most likely the unknown..
Utilize resonance structures to show the delocalization over four carbons of the positive charge, unpaired electrons and negative charge of benzeyl cations, radical, anion.
If the value of Kc for the reaction between water vapor and dichlorine monoxide is 0.0900 at 25C. Find out the equilibrium concentrations of all three compounds if the starting concentrations of both reactants are 0.00388 M, with [HOCl]0 = 0.000 M..
The force to push electrons through a battery comes from (a) the energy levels of the electrolyte (b) the intrinsic work function difference of two different metals (c) from electricity (d) an unknown source of energy
A student dissolves 1.50g of copper(II) nitrate in water. After adding aqueous sodium carbonate solution which contains 1.80g of sodium carbonate, the student obtains 0.875g of CuCO3 precipitate.
The thermal decomposition of calcium carbonate produces two by-products, calcium oxide as well as carbon dioxide. Compute the volume of carbon dioxide produced at STP from the decomposition of 231 grams of calcium carbonate.
Which compound accepts electrons from NADH, producing a compound that can pass through the inner membrane?
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