Calculate the enthalpy of the reaction

2NO (g) + O2 (g) →2NO2 (g)

given the following reactions and enthalpies of formation:

12N2 (g) + O2 (g) →NO2 (g), ΔfH∘A=33.2 kJ mol-1

12N2 (g) + 12O2 (g) →NO (g), ΔfH∘B=90.2 kJ mol-1

How many grams of carbon dioxide are produced by the combustion of 75.3 g of octane (C8H18) ?

Find the area of a vegetable garden that is 4.83m long and 3.4m wide. Give your answer to the correct significant figure. (use the symbol "e" to indicate exponent)

A gas sample at stp contains 1.15 g oxygen gas and 1.55 g nitrogen gas. what is the volume of the gas sample?

In any ordinary chemical reaction, matter is neither created nor destroyed; it is simply changed from one chemical substance to another. This principle is called the Law of:

Is distilled water homogeneous or heterogeneous?

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?

An element x forms an iodide (xi3) and a chloride (xcl3). the iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2xi3+3cl2â2xcl3+3i2 if 0.5500 g of xi3 is treated, 0.2596 g of xcl3 is obtained.

When you kick a soccer ball across a field it will eventually come to a stop. Does this prove or disprove Newton's first law of motion? It disproves Newton's first law of motion because gravity is stronger than friction.