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When 19.8g butane, C4H10 is burned with excess oxygen: 2C4H10g + 13O2g -----> 8CO2g +10H2Og How many grams of oxyen are consumed, how many grams of CO2 & H2O are produced?
Compute the pH if NaOH solution of the 10.00 mL has been mixed. pKa of HCOOH = 3.74
what is the lewis structure and molecular geometry of pernitrate and carbonate ion?
For the reaction given below at 700°C, Kc = 0.534. H2(g) + CO2(g) reverse reaction arrow H2O(g) + CO(g) Calculate the number of moles of H2 that are present at equilibrium
a 55.0g piece of copper wire is heated, and the temperature of the wire changes from 19.0C to 86.0C. The amount of heat absorbed is 1.4 kilojoules. What is the specific heat of copper?
A stock solution is prepared by adding 10 mL of 2.5 M Ba(CN)2 to enough water to make 23 mL. What is the CN- concentration of 5 mL of the stock solution
10 logarithmic scale of hydrogen ion concentration Be careful If pH = -log [H+ ], what does [H+ ] equal? If the pH of an aqueous solution is 3.50 at 25 C, what is the hydroxide ion concentration?
Write the rate laws and determine the units of k (the rate constant) for the following reactions: (a) The reaction A + 2B --> C is found to be second order in A and B, and third order overall
How will you prepare the following solutions from 6.0 M solutions of acetic acid and ammonia. Give exact details. Assume that a 10-mL graduated cylinder.
a sample of chlorine gas occupies a volume of 946ml at a pressure of 726mmhg. Calculate the pressure of the gas in (in mmhg) if the volume is reduced at constant temperatures to 154ml.
What is the maximum wavelength of light capable of removing an electron from a hydrogen atom in the energy states characterized
Minimal energy cost of H2S conversion to hydrogen and sulfur in gliding-arc is 1.6 eV/molec
Which element requires the least amount of energy to remove the most loosely held electron from a gaseous atom in the ground state?
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