Answer:
Explanation:
An atom on a face is shared by two unit cells, so only half of the atom belongs to each of these cells. An atom on an edge is shared by four unit cells, and an atom on a corner is shared by eight unit cells.
Well there are 60 seconds in a minute and 60 minutes in an hour and 24 hours in a day so you would do 60×60 which is 3600. then you would multiply 3600 by 24 which would give you the number of seconds in a day, 86400. since you need the number of seconds in 2 days just multiply the amount by 2. your answer is: There are 172,800 seconds in two days.
Answer: HEY THERE!
Explanation: HERE IS YOUR ANSWER
Sodium has one valence electron, so giving it up would result in the same electron configuration as neon. Atoms are more stable when they have no charge, or a small charge
HOPE THIS HELPED AND HAVE A NICE DAY!
Answer:
98.78 g/mol.
Explanation:
<em>Thomas Graham</em><em> found that, at a constant temperature and pressure the rates of effusion of various gases are inversely proportional to the square root of their masses.</em>
∨ ∝ 1/√M,
where, ∨ is the rate of effusion and M is the atomic or molecular weight of the gas particles.
- For two different gases, unknown gas (1) and hydrogen (2):
∨₁/∨₂ = √M₂/√M₁.
∨₁/∨₂ = 1/7,
M₁ = ??? g/mol, M₂ = 2.01588 g/mol.
∴ (1/7) = (√2.01588)/(√M₁)
By squaring both sides:
∴ (1/7)² = 2/(M₁) = 0.02
∴ M₁ = 2.01588/0.02 = 98.778 g/mol ≅ 98.78 g/mol.