Answer:
The answer to your question is 6.72 x 10²⁰ atoms
Explanation:
Data
Avogadro's number = 6.022 x 10²³ atoms
Volume = 22.4 L
Volume 2 = 25 ml
Number of atoms = ?
Process
1.- Convert mL to L
1000 mL ----------------- 1 L
25 mL ------------------ x
x = (25 x 1) / 1000
x = 25 / 1000
x = 0.025 L
2.- Use proportions and cross multiplication to find the answer.
22.4 L ----------------- 6.023 x 10²³ atoms
0.025 L -------------- x
x = (0.025 x 6.023 x 10²³) / 22.4
x = 1.51 x 10²² / 22.4
x = 6.72 x 10²⁰ atoms
Answer:
At a front, the two air masses have different densities, based on temperature, and do not easily mix. One air mass is lifted above the other, creating a low pressure zone.
Explanation:
Hope this helps!
The number of molecules= 3.55 x 10²⁴
<h3>Further explanation</h3>
Given
5.9 moles of NaCl
Required
The number of molecules
Solution
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
So for 5.9 moles :
= 5.9 x 6.02 x 10²³
= 3.55 x 10²⁴
Here we have to choose the correct statement on the effect of temperature on the motion of the molecules and atoms of a gas.
As the temperature increases the molecules and atoms move faster.
As per the kinetic theory of gas molecules and atoms the kinetic energy (K.E.) of the atom or molecules is related to temperature by the equation
K.E. = 
kT ( k = Boltzmann constant, T = temperature.
Thus as the temperature increases the K.E. increases thus the atom or molecules move faster.
With the decrease of temperature the movement of the atoms or molecules will be less and they will be near to each other.
The increment of temperature increase the K.E. thus the atoms or molecules move apart from each other.
With the decrease of temperature the movement of the atoms or molecules decreases.
