Answer:
Number of moles = 0.12 mol
Explanation:
Given data:
Mass of carbonate = 6.5 g
Moles of carbonate = ?
Solution:
Number of moles = mass / molar mass
Molar mass of carbonate = 60 g/mol
Now we will put the values in formula:
Number of moles = 6.5 g/ 60 g/mol
Number of moles = 0.12 mol
Answer:
In Beryllium there are two energy levels
Explanation:
Answer:
- <em>As the temperature of a sample of matter is increased, the average kinetic energy of the particles in the sample </em><u>increase</u><em>.</em>
Explanation:
The <em>temperature</em> of a substance is the measure of the <em>average kinetic energy </em>of its partilces.
The temperature, i.e. how hot or cold is a substance, is the result of the collisions of the particles (atoms or molecules) of matter.
The kinetic theory of gases states that, if the temperature is the same, the average kinetic energy of any gas is the same, regardless the gas and other conditions.
This equation expresses it:
Where Avg KE is the average kinetic energy, R is the universal constant of gases, N is Avogadro's constnat, and T is the temperature measure in absolute scale (Kelvin).
As you see, in that equation Avg KE is propotional to T, which means that as the temperature is increased, the average kinetic energy increases.
