1. Put the layers of Earth in order from densest to least dense.
A. Crust, Mantle, Inner core, Outer Core
B. The inner core, Mantle, Outer core, Crust
C. Crust, Mantle, Outer core, Inner Core
D. The inner core, Outer core, Mantle, Crust
2. Which layer plays the greatest role in the movement of tectonic plates?
A. Crust
B. Mantle
C. Outer core
D. Inner core

1-A

2-B

Explanation:

2- mantle is liquid and moves crust

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :