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Depict what kind of redox reaction each reaction below is. Identify the oxidizing and reducing agents.
A) 2 Ca(s) + O2(g) ---> 2 CaO(s)
B) 2 Al(s) + 6 HCl(aq)---> 3 H2(g) +2AlCl3(aq)
C) 2 HgO(s)--->2 Hg(l) + O2(g)
D) C2H4(g) + 3 O2(g)---> 2 Co2(g) + 2 H2O(l)
E) Si(s) + 2 Cl2(g) --->SiCl4(g)
the acetylsalicylic acid into sodium acetylsalicylate but not give excess of sodium hydroxide in your solution? sodium hydroxide has a molecular weight of 40.00grams/mole
If 57.0 of solution is needed to precipitate all the sulfate ion in a 756 sample of , what is the molarity of the solution?
A certain indicator, HA, has a Ka value of 0.00050. The protonated form of the indicator is red and the ionized form is blue. What is the pKa of the indicator
What speed would an O2 molecule have if it had the same momentum as a photon of 700 nm wavelength
Determine How many moles each of Na+ and Cl- are in 0.800 L A physiological saline solution contains 172mEq/ L each of Na+ and Cl-of the saline solution?
write down all species including states that are present in signicant amounts when the following solids are added to
Alkynes can be hydrated in the presence of acid and HgSO4, by electrophilic addition of a molecule of water to the triple bond. The reaction proceeds by way of a carbocation intermediate
A solid sphere of a metal with a mass of 0.7371kg has a diameter of 50.0mm. Calculate the density of metal. Calculate the moles of FeSO4 present in an iron tablet containing 400mg FeSO4.
Calculate the following to determine Kc for FeSCN2+. a,) moles Fe3+ initially present. b.) moles SCN- initially present
If the initial surface coverage is 8.9*10^16 molecules/cm^2, how long will it take for one-half of the film to evaporate? b. What fraction of the film is left after 10 s? Assume the same initial coverage as in part a.
If you fill the larger tank with oxygen to a pressure of 155 atm, to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
A volume of 5.0 mL of solution of sodium carbonate was analyzed and found to contain 6.34x10^-4 moles of carbonate ion. Calculate the molarity of sodium carbonate in the solution.
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