Landon's new toy arrived in the mail covered in foam packing peanuts. The foam packing peanuts have a mass of 30 g and a volume of 60 cm3. What is the density? 2 g/cm3
180 g/cm3
0.5 g/cm3
2

The equilibrium concentration of NO in the gas mixture should be 0.578 M

Explanation:

We have equilibrium data for the chemical reaction in the gas phase:

SO2(g)+NO2(g)⇌NO(g) +SO3(g)

The equilibrium constant (Keq) for this reaction is 10.8.

Data for the components involved in this equilibrium are:

[SO3] = 1.7 M

[NO] = Unknown

[NO2] = 1.3 M

[SO2] = 0.07 M

We can express the Equilibrium constant as the multiplication of the concentrations of products divided by the multiplication of the concentration of reagents. After that, we can isolate [NO] concentration and find its value.

Replacing the values given in the problem

Finally, the equlibrium concentration is [NO] = 0.578 M