Answer:
Ion are protons
Explanation:
Equation
CaCO3 ===> CaO + O2
Solution
If you start with this equation, then the balance numbers (molar ratios) are
If you want 2.35 moles of CaO then you are going to have to start out with 2.35 moles of CaCO3
In the decomposition of calcium carbonate to form calcium oxide, there is a 1:1 mole ratio. Therefore, to get 2.35 moles of calcium oxide, 2.35 moles of calcium carbonate are required.
To answer this question, you need to consider stoichiometry, which is the study of the relationships or ratios between the amounts of products and reactants in chemical reactions. The balanced chemical equation for the thermal decomposition of calcium carbonate (CaCO3) to form calcium oxide (CaO) and carbon dioxide (CO2) is:
CaCO3(s) → CaO(s) + CO2(g)
This equation tells us that 1 mole of CaCO3 will produce 1 mole of CaO. Therefore, if we need 2.35 moles of CaO, we would need 2.35 moles of CaCO3 because of the 1:1 mole ratio in the chemical reaction.
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a) as a liquid
b) as a gas
made up of what?
The number of electrons that can be held in the second orbital (closest to the nucleus) is 8 electrons
The arrangementof electrons in various energy levels or orbital follows a well defined order. This can be determined by using the following formula:
Number of electrons = 2n²
Where
Now, we shall obtain the number of electrons in the second orbital. Details below:
Number of electrons = 2n²
= 2 × 2²
= 2 × 4
= 8 electrons
Thus, the number of electrons in the second orbital is 8 electrons
Learn more about number electrons in energy levels:
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