Bohrs model says that electrons move in fixed shells (which have fixed distances) around the nucleus of an atom.
Answer:
The molecular formula of a compound represents molecular mass of the substance. For example, the molecular mass of water molecule (H2O) is 18u.
(iv) The molecular formula of any compound gives the name, and actual number of atoms of each kind present in one molecule of the substance. For example, the formula for water is H2O. This means that every molecule of water is made up of 2 atoms of hydrogen and one atom of oxygen.
I believe it is b. you only want to change one thing at a time so you know which one thing caused the effect
No, because boats and other mechanical vehicles can spill gas and oil into the freshwater. if the freshwater is scarce already, we should not contaminate it more by risking the gas and oil spills.
Answer:
all of the above
Explanation:
i got the answer right on cK-12
