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A 1.994 g sample of ethanol, CH3CH2OH, is combusted in a bomb calorimeter. The temperature of the calorimeter increases by 10.91 K. If the heat capacity of the bomb is 615.5 J/K and it contains 1.150 kg of water, what is the enthalpy change per mole of ethanol combusted? The specific heat capacity of water is 4.184 J/g×K and the molar mass of ethanol is 46.07 g/mol.
Determine the heat that must be extracted to cool the gas from 375 C to 275 C at (a) Constant Pressure and (b) constant volume.
Aluminum sulphate is used in sand paper, among other uses. How many g of aluminum oxide dihydrate will be needed to produce 500 g of aluminum sulphate by the (unbalanced) reaction below? Al2O3 •2H2O + H2SO4 Al2(SO4)3 + H2O
Calculate [H+] and the pH of the following solutions
When relatively small amounts of magnesium burns, the fires are extinguished using commercially available dry powder. Why might this fire rekindle days later as someone tries to remove the residue with water?
Select the strongest interparticle force(s) present in Mg3N2.
An automobile gasoline tank holds 22kg of gasoline. When the gasoline burns, 85kg of oxygen is consumed & carbon dioxide & water are produced? What is the total combined mass of carbon dioxide & water that is produced?
Explain how the acid hydrolysis of starch differs from the enzyme catalyzed hydfolysis. Compare products as well as conditions of time
How many grams of NaN3 are required to produce 340 L of nitrogen gas if the gas has a density of 1.25 g/L?
explain how to find distinct terminal alkynes.
Using a flow diagram, show the separation of a mixture containing p-bromoacetanilide, N-cyclopentyl-N-methyl-N-propylamine (N means the group is attached to the nitrogen of the amine) and m-nitrophenol. Specify the organic solvent and aqueous
Converting Grams and Moles, To do this assignment, use your calculator to do the calculations required. Then invert the calculator to read the message word. Insert the message word into the appropriate space in the statement
Which salts are more effective for cold and hot packs, KNO3, NH4NO3, MgSO4, CaCl2, MgCl2? which are most cost effective? Maximum and minimum T for both?
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