B is the correct answer I hope that this help
True, nuclear fusion is a reaction in which multiple atoms come in contact to form new atom and subatomic particles. in a nuclear fusion, some of the mass is lost which defies the law of conservation of mass, but according to scientist the lost in mass is manifested in the production of huge amount of energy,
This should help you with your question:
Gravitational pull = 9.8 m/s^2
1/2 x 9.8 x 7^2 = 240.1 m
The rock has fallen 240.1 m.
I cannot help you with the rest, but this should give you a headstart.
Answer:
n₁ = 2
Explanation:
The Rydberg formula is given by
1/λ = Rh x (1/n₁² - 1/n₂² ) where Rh = Rydberg´s constant , and n₁ and n₂ are the energy levels of the transitions involved.
The highest energy line in a series will happen when n2 tends to infinity, and then in
1/λ = Rh x (1/n₁² - 1/n₂² ) the term 1/n₂² in the limit is zero
1/λ = Rh x 1/n₁²
So lets solve for n₁² :
n₁² = Rh x λ = 109,737 cm⁻¹ x 365 x 10 ⁻⁷ cm = 4.00
n₁ = √4.00 = 2
This the value for the Balmer series.
Answer:
2:3
You'd need 33.3 moles of potassium chlorate, KClO3 , to produce that much oxygen. Notice that you have a 2:3. mole ratio between potassium chlorate and oxygen gas, which means that, regardless of how many moles of the former react, you'll always produce 3/2 times more moles of the latter.
Explanation:
