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An oxyacetylene flame is often used in the welding of metals. Estimate the flame temperature produced by the reaction. 2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(g) Assume the heat generated from this reaction is all used to heat the products. (Hint: DeltarH is equal to -2162.2 kj/mol. Look up the heat capacities of the products. Assume the heat capacities are temperature independent)
How many simabonds are there in a C60 molecule? 2. Which has stronger carbon-carbon bonds: graphite, diamond or C60? Please explain
if 100 mL of 0.800 M Na2SO4 is added to 200 mL of 1.20 M NaCl, what is the concentration of Na ions in the final solution?
As the temperature continues to increase, the probabilities temperature continues to increase, the probabilities will reach a limiting value. What is this limiting value?
How many moles of NaOH would be required to completley neutralize 37.22mL of 0.25M HCl.
Calculate the volume of reagent required for each reaction in this lab sequence, assuming the tarting mass of copper used is 1.00g. Concentrations of reagents are
The reaction of 0.130 moles of a metal with an acidic aqueous solution in a calibrated calorimeter causes the temperature to increase by 49.0°C.
we need to form a cyclohexanone with a methyl group at the 6 position and a 2,3-butanediol group (with both OH groups at the back (dashed lines)) at the 2 position. All carbons on the target need to come from the starting materials, but other than..
A sample of gas with a mass of 1.78 occupies a volume of 961 at a pressure of 753 and a temperature of 16. What is the molar mass of the gas?
The initial rate of a reaction which is first order in A is 2.0 x 10^-6 M/s when the initial concentration is 0.0050 M. What is the first order rate constant
Using the balanced equation: 2NaCl(s)+ 1H2SO4(aq)= 2HCl(aq)+1Na2SO4(aq) a. If 20. G of NaCl are used, and only 5.6 g of HCl are isolated, what is the percent yield of HCl? b. If only 5.6 g of HCl are obtained, how many grams of Na2SO4 must also ha..
What volume of O2 at 988 mmHG and 33 degree celsius is required to synthesize 12.5 mol of NO
the gas sample weighs 2.62grams then computes the molecular weight and determines the identity of the gas.
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