Does potassium have 18 electrons.

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2