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The bond energies are: C H 416 kJ/mol; C C 356 kJ/mol; C C 598 kJ/mol; O O 498 kJ/mol; C O 803 kJ/mol; H O 467 kJ/mol.determine the heat of combustion of ethylene ?
A 100.0 L weather balloon filled with 4.6 moles of helium has a small leak. If the helium leaks at a rate of 10 mmol/hr. what is the volume of the balloon after 57 hrs?
Calculate [OH] for a solution formed by adding 5.00 mL of 0.140M KOH to 15.0 mL of 9.0×10-2M Ca(OH)2.
What volume of .305M AgNO3 is required to react exactly with 155mL of .274M Na2SO4 solution
if ammonia is obtained in 90% yield based on hydrogen, how many tons of hydrogen are necessary to produce 100 Mg of ammonia?
how many moles of Ba(OH)2 are present in 165ml of 0.600M Ba(OH)2.
fluride ion is poisonous in relatively low amounts. 0.2 g of F per 70 kg of body weight cause death . nevertheless, inorder to drinking water at a cencetration of 1 mg of F ion per L of water
Calculate the cell potential for the following reaction that takes place in an electrochemical cell at 25°C. Cu(s) | Cu2+(aq, 0.0032 M) || Cu2+(aq, 4.48 M) | Cu(s)
how could you use IR spectroscopy to identify which alkene is in which vial? How do you determine what the wavenumber values are for specific compounds/ elements?
For each of the pairs of elements below give the formula for the simplest compound to be formed from them and explain the basis of your decision and note if the bond
Calculating the rate of disappearance of HCl, The rate of disappearance of HCl was measured for the following reaction
Determine hydroxyl and hydrogen ion concentration in this solution. (if Ka for ammonium ion = 5.0 x 10^-10.)
0.158g of a barium halide is completely precipitated out of H2SO4 and 0.124g of barium sulfate are produced. what is the true formula of the compound.
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