3,6 x 1023 molecules of oxygen gas O2 are equivalent to approx. 0,6 moles.
.500 moles
Force of gas molecules colliding with the container
There is no such thing. There are different units, depending on what exactly (what physical quantity) you want to measure.
An atom with 17 protons is chlorine. (It is unnecessary to say "exactly" because the number of protons can only be whole numbers.)
they are exactly the same in every way except the warm ones move faster
the actual molecules are not different, it is the structure which differs. Molecules in a solid are set out in tight rows, without any room for movement. they cannot change where they are. Molecules in a liquid have a little more freedom.
It is 67, exactly as in the question.
The height of this quantity of water would be exactly that much!
The importance of equilibrium price and quantity is that it creates a point where there is no pressure on the market to shift supply or demand. Suppliers supply exactly the quantity demanded.
623,000,000,000,000,000,000,000
They are exactly the same quantity.
Because that's exactly what it is ! Apart form water molecules, sea water contains dissolved salt, heavy metals, oil, sewage, organic matter and animal faeces.
Force of gas molecules colliding with the container
The molecules of each DNA are exactly the same, they are aranged diferently within chromosomes though.
Ethanol.
An equilateral triangle has exactly three lines of symmetry. It is the only shape that contains exactly three lines of symmetry.
The formula for methane is CH4, showing that each molecule contains exactly 5 atoms. Therefore, the number of atoms in 0.650 ml is 5 X 0.650 X Avogadro's Number, or about 1.96 X 1024 atoms, to the justified number of significant digits.
not exactly sugar broken to glycolysis