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Had a chemistry worksheet and am stuck on these last few problems. Please help with any you can help with. Will rate!!
a) Why can a change be spontaneous even though the system entropy decreases? Identify a spontaneous change in which the entropy of the system decreases.
b) The heat of vaporization of 1.0 mole of water at 100 degrees celcius and 1.0 atm is 40.6 kJ. Calculate the change in entropy for the process H20(l)-->H20(g).
c) Calculate the free energy change for the following reaction and predict whether the reaction occurs spontaneously at 25 degrees celcius. H2(g)+CO2(g)-->H20(g)+CO(g); ?H=41.8 kJ, ?S=42.1 J/K
The Henry's Law constant (k) for carbon monoxide in water at 25ºC is 9.71 x 10-4 mol/(L•atm). How many grams of CO will dissolve in 1.00 L of water if the partial pressure of CO is 2.75 atm?
The double-replacement reaction between silver-nitrate and sodium bromide produces silver bromide, a component of photographic film.
An organic liquid is a mixture of methyl alcohol and ethyl alcohol. A 0.220g sample of the liquid is burned in an excess of O2(g) and yields 0.342 g CO2(g). What is the mass of methyl alcohol in the sample?
Show all of your work for each of the following problems. An aluminum nail of mass 5.00g is immersed into a solution of copper(II)nitrate. How many grams of elemental copper can be produced from the reaction
The minerals chalcocite (Cu2S) and malachite (Cu2CO3(OH)2) are two primary sources of copper. What is the oxidation state of copper in each of these minerals?
sample of H20 with a mass of 46.0 grams has a temperature of -58.0 degrees Ceslius. How many joules of energy are necessary to heat the steam from 100.0 degrees celsius to 114.0 degrees
What volume will 454 grams (1 lb) of hydroigen occupy at 1.05 atm and 25 C.
assign absolube stereochemistry (R or S) to each of the stereocenters in (+)menthol
What is the molecular weigh of acetic acid that will form 2 moles of CO2 assuming complete combustion.
Molar Mass of Sulfur based on molality, What would the molar mass of sulfur be based on the following data and information?
Elements in the first short period are limited by the octect rule whereas those in the higher period can expand their valence shells. Describe what this means, account for this phenomenon and give an example of each.
an energy of 353 kJ/mol is required to cause a Mg atom on a metal surface to lose an electron. calculate the loses frequency of that can ionize a Mg atom.
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