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the products of the combustion reaction of 1 mol glycerin are gaseous carbon dioxide and liquid water. write a balance chemical equation for the combustion of 1 mol glycerin, and calculate delta H for this reaction at 298K if burning 1.24g of glycerin has a delta E of -54.6 kj
Polyethylene is a polymer consisting of only carbon and hydrogen. If 2.300 g of the polymer is burned in oxygen it produces
Fission of one mole of U-235 releases 1.9 x 1010 kJ. Calculate the number of kg of coal needed to produce the same amount of energy as the fission of 1 kg of U-235 (235.05g/mol)
What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous hydrofluoric acid requires
Calculate q,w,delta U and Delta H for each segment and for the cycle in which the direction of each process is reversed. In the graph all it says is the P initial =16.6 bar and Vinitial=1.00L and P final=16.6 bar and V final =25L
It is often necessary to do calculations using scientific notation when working chemistry problems. For practice, perform each of the following calculations
Determine the mass of the hydrate and the mass of the sulfate after removing the water. 2. Calculate the number of moles of water and the number of the moles of the anhydrous sulfate
What size sample containing 12.0% chlorine (Cl) should be taken for analysis if the chemist wishes to obtain a precipitate of AgCl which weigh
A 21.10 g sample of liquid ethanol is initially at -36.90 oC. If the sample is heated at constant pressure (P = 1 atm.), how much kJ of energy are needed to raise the temperature of the sample to 100.60 oC.
Calculate the pH of the solute in an aqueous solution of 0.372 M (CH3)3N(aq) if the Kb is 6.5 Ã- 10âˆ'5.
How many grams of F2 are needed to produce 237 g of PF3 if the reaction has a 80.4% yield?
What is the equilibrium concentration of HXY4 ^2- for a 0.15 M solution of the triprotic acid, H3XY4?
iron has a density of 7.874 g/cm3. what is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000 cm by 5.000 cm?
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