PART A: When 1.54 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 23.0 to

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PART A: When 1.54 g of biphenyl (C12H10) undergoes combustion in
a bomb calorimeter, the temperature rises from 23.0 to 33.8 oC.
Find the ΔErxn for the reaction in kJ/mol. The heat capacity of the
calorimeter is 5.86 kJ/ oC and the MM of biphenyl is 154.2. The Cs
for water is 4.184 J/goC. PART B: Answer the following questions
and show all calculations on your sheet. You may need Planck’s
constant is 6.626 x 10-34 J• s; Rydberg constant 1.097 x 107 m-1;
speed of light is 3.0 x 108 m/s; 1J = 1kgm2/s2. E = hν or = h(c/λ)
ΔE = -2.18 x 10-18J(1/nf2- (1/ni2)); λ = (h/mv) What is the de
Broglie wavelength of an electron travelling at a velocity of 640
m/s? The mass of an electron is 9.100938 x 10-28 g; 1J = 1kgm2/s2.
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