Please just clearly answer the question, do not show how to do it. Please do not

Question

Please just clearly answer the question, do not show how to do it. Please do not post junk from other sites if you aren't sure it is correct, as I've already looked too. Thank you.

Car manufacturers are developing engines that uv H2 at fuel. In Iceland, Sweden, and other parts of Seandlavia. where hydroelectric plants produce inexpensive electric power, the H2 can be made Industrially by the electrolysis of water. Enter your answers in scientific notation. How many coulombs are needed to produce 3.9 Times 106 L of H2 gas at 12.0 aim and 25 degree C? (Assume Ihc ideal gas law applies.) Times 10 C If The coulombs arc supplied at 4.51 V, how many joules are produced? Times 10 J If the combustion of oil yields 4.0 Times 106 kJ/kg. what mass of oil must be burned to yield the number of joules in part (b)? Times 10 kg

Explanation / Answer

a) n = pv/rt = 12*101325*3.9*10^6/(8.314*298) = 1913974649 moles

also 1H2 needs 2 e-

so coulombs required (2*1913974649*6.023*10^23)*(1.6*10^-19) =3.69*10^14

b) 3.69*10^14*4.51 = 1.66*10^15 joules

c)kg = 1.66*10^15/(4*10^7 joules) = 4.159*10^7 kg

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