Answer:
A wet cell battery is a original type of rechargeable battery. an example for wet cell battery is a lead-acid battery
Answer: 2. Decomposition
Explanation:
Synthesis reaction is a type of chemical reaction in which two reactants combine to give a single product.
Decomposition reaction is defined as the reaction where a single substance breaks down into two or more simpler substances.
lithium carbonate → lithium oxide + carbon dioxide

Single replacement reaction is a type of chemical reaction in which more reactive element displaces the less reactive element from its salt solution.
A double replacement reaction is one in which exchange of ions take place.
<span>1 mole of CO2 = 6.023*10^23 molecules.3 moles of CO2 = 3*6.023*10^23 moleculestherefore, 3 moles of CO2 = 18069*10^20 molecules.
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The question is incomplete, here is the complete question:
Write a balanced equation for the neutralization of calcium hydroxide by hydrochloric acid. What is the coefficient for hydrochloric acid in the reaction.
<u>Answer:</u> The balanced chemical reaction is written below and the coefficient of hydrochloric acid is 2.
<u>Explanation:</u>
Neutralization reaction is defined as the reaction in which an acid reacts with a base to produce a salt and water molecule.
Balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side will be equal to the total number of individual atoms on the product side. These equations follow law of conservation of mass.
The balanced chemical equation for the reaction of calcium hydroxide and hydrochloric acid follows:

By Stoichiometry of the reaction:
1 mole of calcium hydroxide reacts with 2 moles of hydrochloric acid to produce 1 mole of calcium chloride and 2 moles of water molecule.
Hence, the balanced chemical reaction is written below and the coefficient of hydrochloric acid is 2.
We can predict the order of the elements given above according from the highest to lowest first ionization energies by using the trends in a periodic table. For elements in a family, the ionization energy decreases as it goes down. Therefore, the correct order would be Be, Mg, Ca, Sr.