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Mo Farah won the 10,000-meter race in the 2012 Olympics with an official time of 27 minutes, 30.42 s. To the correct number of significant figures, what was Farah's average speed in m/sec ?
What is the ratio of atoms of hydrogen to atoms of oxygen, H:O, in ammonium sulfate, (NH4)2SO4? Please explain.
Solid AB2 is added to water and allowed to reach equilibrium. At equilibrium, the concentration of A2+ is found to be 0.24 moles/L. What is the Ksp of this salt
Which of the following states are Ture of the final temperature of a system where equal masses of Aluminum( Cal=0.900 J/g Celsius, Ti=75 Celsius and water (ch2o=4.284j/gcel, Ti=25 cel) are placed in contact? assume no energy losses to the surround..
Benzene, C6H6, is reacted with bromine, Br2, to produce bromobenzene, C6H5Br, and hydrogen bromide, HBr, as shown below. When 40.0 g of benzene are reacted with 95.0 g of bromine, 65.0 g of bromobenzene is produced.
Determine the concentration of the HCL solution from the data for the standardization of the HCl with the Na2CO3 Na2CO3 had 0.0826 grams in 25ml of water Initial volume of HCl in the burette was 50ml Volume of HCl
What volume of solution do I have in a flask if the empty flask weighs 250g, the total flask with solution weighs 320g, and the density of the solution is 1.5g/ml
The pKa's of benzoic acid and 4-nitroanilinium hydrochloride are 4.2 and 1.0, respectively.
The latent heat of vaporization of water is 577 J/kg. If a person's body needs to lose 345 J of energy through sweating, how many kilograms of water in the form of sweat must be evaporated.
Write a reaction mechanism for the dehydration of 4,5-dimethyl-3-hexanol in concentrated phosphoric acid. Use curved arrows to show electron movement and clearly show the major product formed.
what is the root-mean-square molecular speed of a gas molecule of this smelly gas molecule at 25C?
The photosynthesis reaction is 6CO2(g)+6H2O(g)>C6H12O6(s)+6O2(g). If the reaction requires 2.82*103KJ/mole of C6H12O6 formed:
How many mL of .100 M KCI(aq) are required to react completely with 4.325 g of solid Pb(NO3) to form PbCl2?
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