<u>Answer:</u> The uncertainty in the velocity of oxygen molecule is 
<u>Explanation:</u>
The diameter of the molecule will be equal to the uncertainty in position.
The equation representing Heisenberg's uncertainty principle follows:
where,
= uncertainty in position = d = 
= uncertainty in momentum = 
m = mass of oxygen molecule = 
h = Planck's constant = 
Putting values in above equation, we get:
Hence, the uncertainty in the velocity of oxygen molecule is
Explanation:
Formula to calculate how many particles are left is as follows.
N = 
where, 
= number of initial particles
l = number of half lives
As it is given that number of initial particles is 
and number of half-lives is 3.
Hence, putting the given values into the above equation as follows.
N = 
= 
= 
or, 
Thus, we can conclude that particles of radioactive nuclei remain in the given sample.
In five hours we've gone through 5 half lives so the answer is:
particles
Water can act as both an acid and a base in a solution and undergoes auto ionization where it can be both an acid and a base to itself. The ph of water is 6.5 to 8.5.
Hope this helped :)
Answer:
0.493L
Explanation:
Let us write a balanced equation for the reaction. This is illustrated below:
Mg + 2HCl —> MgCl2 + H2
Next, let us convert 0.52g of Mg to mole. This is illustrated below:
Molar Mass of Mg = 24g/mol
Mass of Mg = 0.52g
Number of mole of Mg = Mass /Molar Mass = 0.52/24 = 0.022mole
From the equation,
1mole of Mg produced 1mole of H2.
Therefore, 0.022mole of Mg will always produce 0.022mole of H2.
1mole of H2 occupies 22.4L at stp.
Therefore, 0.022mole of H2 will occupy = 0.022 x 22.4 = 0.493L
Answer:
A front is a weather system that is the boundary separating two different types of air. One type of air is usually denser than the other, with different temperatures and different levels of humidity.
