Calculate the empirical formula of a compound that is 42.9% Carbon and 57.1% Oxygen.

CO.

Explanation:

Assuming the given percentages are by mass, we can solve this problem via imagining we have 100 g of the compound, if that were the case we would have:

Now we convert those masses into moles, using the elements' respective molar masses:

As the number of C moles and O moles is roughly the same, the empirical formula for the compound is CO.

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.

clouds form

solid ice forms on leaves.

water droplets form on grass.