What will the final temperature of 400 mL sample of water at39.2°C be if 36,555 J of heat were added.
a.88.1°C
b.58.2°C
c.77.0°C
d.61.0°C
How much heat is produced when 6.26g of zinc metal reacts withoxygen gas under standard conditions? Use standard enthalpies offormation provided in your textbook.
a. 35.5 kj
b.267 kj
c.1021 kj
68.7 kj
Ethanol, C2H5OH, is used as a primary fuel for motor vehicles insome countries like brazil,The balanced chemical equation for thecombustion reaction is
C2H5OH(l) + O2(g)-------- CO2(g) + H2O(g)
The density of the ethanol is 0.7893g/mL .Determine the enthalpyof combustion of exactly 2L of ethanol.
a. -3.31 x 10^4 kj
b.-4.68 x 104
c.-1.11 x 104 kj
d.1.69 x 10^4 kj
