Answer:
The value is
Explanation:
From the question we are told that
The equilibrium spacing is
The mass of a hydrogen atom is
The principal quantum number of the second energy level is
The principal quantum number of the first energy level is
Given that the hydrogen molecule is a symmetrical diatomic molecule, its moment of inertia is mathematically represented as
Generally for rotational spectrum the energy level is mathematically represented as
Generally the energy difference between the first energy level and the second energy level is mathematically represented as
=>
=>
substituting for I
=>
Generally this difference in energy level can also be mathematically represented as
=>
=>
Here h is Planck's constant with value
and c is the speed of light with value
So
=>
=>
=>
Answer:
A solution is made when one substance called the solute "dissolves" into another substance called the solvent.
Explanation:
once it is broken down"dissolves" from bigger pieces it becomes much smaller groups
However, the greatest threats to sea turtles aren't from natural predators; they are from humans. Accidental catch in commercial fisheries or entanglement in marine debris are serious threats to sea turtles, as well as destruction of beach habitat, harvesting or poaching for meat and eggs, and even boat strikes.
Answer:
The correct answer is 378 g of water
Explanation:
A concentration of 5.50% by mass means that there are 5.50 grams of solute in 100 grams of solution:
5.50 %m/m = 5.50 g solute/100 g solution
If we have 22.0 g of solute (KCl), we found the total mass of solution as follows:
5.50 g KCl ----- 100 g solution
22.0 g KCl ------ X = 22.0 g KCl x 100 g solution/ 5.50 g KCl = 400 g solution
22.0 g KCl/400 g solution = 5.5 g KCl/100 g solution = 5.50 % m/m
This is the total mass of solution (400 g). The mass of water we have to add is the following:
Mass water = 400.0 g solution - 22.0 g KCl = 378.0 g
So, in order to prepare a 5.50% m/m of solution, we have to weight 22.0 g of KCl and to add 378.0 g of water until reaching 400.0 g of total mass solution.