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)
Answers: 2
Chemistry, 22.06.2019 05:30
Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.
Answers: 1
Chemistry, 22.06.2019 18:00
How does climate change cause the ocean's thermohaline current to slow down?
Answers: 3
Chemistry, 22.06.2019 18:00
How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.
Answers: 3
Chemistry, 22.06.2019 21:00
Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g
Answers: 2
PLZ HELP For the reaction: 2NO2(g) → N2O4(l),
the ΔH of the reactants, two moles of NO2 (g), is + 6...
Mathematics, 22.02.2021 19:50
Mathematics, 22.02.2021 19:50
Biology, 22.02.2021 19:50
History, 22.02.2021 19:50
Mathematics, 22.02.2021 19:50
Social Studies, 22.02.2021 19:50
Mathematics, 22.02.2021 19:50
Mathematics, 22.02.2021 19:50
Health, 22.02.2021 19:50
Social Studies, 22.02.2021 19:50