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:
two
Explanation:
wo moles of chlorine gas reacts with one mole of sodium to produce two moles of sodium chloride.
Answer:
B.
Explanation:
Na is Sodium and Cl is Chlorine [Chloride]
<h3>
Answer:</h3>
16.30 %
<h3>
Explanation:</h3>
- The percent by mass is calculated by dividing the mass of solute by the mass of solution and then multiplying by 100.
- That is. Percent by mass = (Mass of solute/Mass of solution) × 100
In this case;
Mass of solute = 14.60 g
Mass of solvent = 74.95 g
But, Mass of solution = mass of solute + mass of solvent
Thus;
Mass of solution = 14.60 g + 74.95 g
= 89.55 g
Therefore;
% mass = (14.60 ÷ 89.55 g) × 100%
= 16.30 %
Hence, the mass percent is 16.30%