2NO2 means that there is 2 oxygen atoms and one nitrogen with two sets of that. So its the third one
Well, Harry, what you said is not necessarily true the way you said it.
But we know what you mean, and what you meant to say is true.
The Doppler effect is observed if there is relative radial motion
between an object and an observer <em><u>AND</u></em> if the object happens
to be putting out sound or light in the observer's direction.
I think it’s b... not sure tho sorry
the radiogenic heat produced by the radioactive decay of isotopes in the mantle and crust, and the primordial heat left over from the formation of the Earth.
The answer would most likely be A since obviously gravity weighs things down which helps the every other masses stay settled in place
