Water(H20) is not found on the Periodic Table of the elements because water is
2 answers:
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Answer:
Explanation:
The balanced equation is
CaCO₃(s) ⇌ CaO(s) + CO₂(g); Kp = 1.16
Calculate Kc
T= 800 °C = 1073 K; Δn= 1
Equilibrium concentration of CO₂
Moles of CO₂ formed
Moles of CaCO₃ used up
Moles of CaCO₃ used up = moles of CO₂ formed = 6.155 × 10⁻⁴ mol
Mass of CaCO₃ used up
Moles of CaO formed
Moles of CaO formed = moles of CO₂ formed = 6.155 × 10⁻⁴ mol
Mass of CaO formed
Mass of solid at equilibrium
m = 10.0 g – 0.0616 g + 0.0345 g = 10.0 g
Answer:
2.2moles
Explanation:
Given parameters:
Atomic mass of Radium = 226
Mass of Radium = 497.2g
Unknown:
Number of moles = ?
Solution:
To solve this problem, we use the expression below:
Number of moles =
The molar mass of the radium = 226g/mol
So;
Number of moles = = 2.2moles