What is the empirical formula of a compound that contains 25.92 percent nitrogen and 74.07 percent oxygen?

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of N = 25.92 g

Mass of O = 74.07 g

Step 1 : convert given masses into moles.

Moles of N =

Moles of O =

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For N =

For O =

The ratio of Fe : O= 1:2.5

Converting them into whole numbers, the ratio will be 2: 5

Hence the empirical formula is

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.