Answer:
<h2>9.93 × 10²³ atoms</h2>
Explanation:
The number of atoms of potassium can be found by using the formula
<h3>N = n × L</h3>
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
N = 1.65 × 6.02 × 10²³
We have the final answer as
<h3>9.93 × 10²³ atoms</h3>
Hope this helps you
Answer:
A: The amount of CaCO₃ decreases.
B: The amount of CaCO₃ increases.
Explanation:
To know how the system will proceed to reach equilibrium, we need to calculate the reaction quotient (Q) and compare it with the equilibrium constant (Kc).
Part A 15.0 g CaCO₃, 15.0 g CaO, and 4.25g CO₂
CaCO₃ and CaO are solids and they do not take part in Q nor Kc, so we will just calculate the concentration of CO₂.
Then,
Q = [CO₂] = 9.66 x 10⁻³
Q < Kc (0.0108), so the reaction will proceed to the right to achieve equilibrium, thus decreasing the amount of CaCO₃.
Part B 2.50 g CaCO₃, 25.0 g CaO, and 5.66g CO₂
Then,
Q = [CO₂] = 0.0129
Q > Kc, so the reaction will proceed to the left to achieve equilibrium, thus increasing the amount of CaCO₃.