1 mol is (always) the same number of units: 6.02 * 10^23 units.
So 0.5 moles of any gas has the same number of molecules.
Also, we know by the ideal gas laws that a give number of molecules of any gas will occupy the same volume.
Given that the three gases have the same number of atoms in the molecular fomula (2), 0.5 moles will also have the same number of atoms.
g.f.w. stands for grams formula weight and that is different for all of them, because gfw is calcualted from the atomics masses of each atom in the molecule.
Then at STP (standard temperature and pressure) conditions 0.50 moles of any of the gas:
- will contain the same number of molecules,
- will contain the same number of atoms
- will occupy the same volume.
Answer:
Its kinetic energy
Explanation:The dart is in motion because of the potential energy being stored and turned into kinetic energy, plus since the dart is aerodynamic, it would have more speed for it to hit the dart board.
Answer:
Coal is a traditionally used source of energy, there are main four types of ranks for coal. Here the rank of a coal means to a natural process called Coalification, which takes place during a plant is buried and changes to a harder, and denser material and become even more rich in carbon contents.
Anthracite is know to have the highest ranked coal, it contains highest percent of fixed carbon and lowest percent of volatile material.
Elements in the same group tend to have very similar properties (D). This is due to the number of valence electrons each group has.
