subject
Chemistry, 07.06.2020 13:57 Spence8900

PLZ HELP For the reaction: 2NO2(g) → N2O4(l), the ΔH of the reactants, two moles of NO2 (g), is + 66 kJ/mol,
and the ΔH of the products, N2O4 (l), is -20 kJ/mol.
Which of the following shows the ΔH (change in enthalpy) for the reaction as a whole?

Question 8 options:

ΔrxnH =(- 20 kJ/mol) / (+66 kJ/mol)

ΔrxnH = (+66 kJ/mol) + (- 20 kJ/mol)

ΔrxnH =(-20 kJ/mol) - (+ 66 kJ/mol)

ΔrxnH =(+66 kJ/mol) - (- 20 kJ/mol)

ansver
Answers: 2

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 18:30, 5001Je
In an oxidation-reduction reaction, oxidation is what happens when a reactant
Answers: 1
image
Chemistry, 22.06.2019 08:00, stephstewart1209
Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.
Answers: 2
image
Chemistry, 22.06.2019 14:30, cxttiemsp021
Calculate the mass of carbon in 97.0 g of sucrose c12h22o11
Answers: 3
image
Chemistry, 22.06.2019 16:00, bbrogle5154
If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml
Answers: 1
You know the right answer?
PLZ HELP For the reaction: 2NO2(g) → N2O4(l), the ΔH of the reactants, two moles of NO2 (g), is + 6...

Questions in other subjects:

Konu
Physics, 11.09.2019 03:20
Konu
Mathematics, 11.09.2019 03:20