Most particles in the plasma are heavy and slow and this statement explains why a plasma based light does not have a high temperature. The correct option among all the options that are given in the question is the third option. It is a fact that a heavy nuclei always takes more time to reach a thermal equilibrium.
Answer:
71 protons
102 neutrons
Explanation:
Step 1: Find atomic number of Lu
Lu - Element number 71
So we know that Lu has 71 protons.
Step 2: Identify Lu - 173
173 is the atomic mass number, meaning the combined number of protons AND neutrons.
173 - 71 = 102 neutrons
The satellite's rockets fire in 18.54 s
<h3>Further explanation</h3>
Given
F- Force = 550 N
I - impulse = 10,200 kg m/s
Required
Fire time
Solution
Impulse is defined is the product of the force with the time interval when the force is acting on the object.
Can be formulated :
I = F. Δt
Δt = I : F
Input the value :
HNO3 molar mass = 1 + 14 +3*16 = 63 g/mol
# of moles = mass / molar mass - 25.0 g / 63 g = 0.3968 moles
# of atoms = # of moles * Avogadro number = 0.3968 mol * 6.022 *10^23 atoms/mol = 2.39 * 10^23 atoms
