just use the formula:
q = cmδt
q = heat energy needed for that material to get desired temperature change (in joules)
m = mass (in grams) so you have to convert from kilograms.
c = specific heat constant for the material being heated [in /(grams oc)]
δt = change in temperature (in oc)
q = (1.75)(2.17 x 1000)(191 - 23) = (1.75)(2170)(168) = 637,980 joules
hope that you in some way
also have a great day!
explanation:we will suppose the fuel has the formula nxoy.the molar mass of the fuel = (x . atomic mass of n) + (y . atomic mass of o) = 92.0 g/mole.
the % composition of n = 30.43 %the % composition of n = (x.atomic mass of n)/(molar mass of fuel) x 100.then x = (% composition of n)(molar mass of fuel) / 100(atomic mass of n) = (30.43 %)(92.0 g/mole) / 100(14.00 g/mole) = 1.9996 ≅ 2.0.
by the same way;
the % composition of o = 69.57 %the % composition of o = (y.atomic mass of o)/(molar mass of fuel) x 100then y = (% composition of o)(molar mass of fuel) / 100(atomic mass of o) = (69.57 %)(92.0 g/mole) / 100(16.00 g/mole) = 4.0.
so, the formula of the compound is n₂o₄.
the chemical formula for carbon tetrafluoride is cf4