There is a series of nitrogen oxides with the general formula N?O?. What is the empirical formula of one that contains 30.45% nitrogen? Question 13 options:

N2O

NO

NO2­

N2O3

N2O5

The empirical formula of one that contains 30.45% nitrogen is .

Explanation:

Given: Mass of nitrogen = 30.45 g

Let us assume that the mass of given oxide is 100 grams.

As the atomic mass of nitrogen is 14.0067 g. So, moles of nitrogen will be calculated as follows.

Also, mass of oxygen = (100 - 30.45) g = 69.55 g

Atomic mass of oxygen is 15.9994 g/mol. So, moles of oxygen will be as follows.

The ratio of both the atoms is as follows.

This means that gas has 2 moles of oxygen to 1 mole of nitrogen. Hence, the formula of oxide is .

Thus, we can conclude that the empirical formula of one that contains 30.45% nitrogen is .

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

the answer is c. nacl