Answer:
1.
Explanation:
Ca3(PO4)2
There will be two atoms of phosphorus in the 1.75 mol of calcium phosphate.
Atoms are the smallest unit of matter. In a chemical reaction, the number of atoms shows the quantity of an element in the compound or reaction. Phosphorus is a chemical element that is preset in the periodic table.
In calcium phosphate, Ca3(PO4)2, the number of atoms can be calculated by counting the number of moles that is given in the equation.
The number of atoms of calcium is 3, and the number of phosphorus atoms is 2.
Now given the 1.75 mol of calcium phosphate, so the number of atoms of phosphorus will be the same in any number of moles of calcium phosphate. So there will be 2 atoms of phosphorus in the given equation.
Thus, the number of atoms is two.
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Answer:
It has 2 phosphorus atoms in 1 mol
so for 1.75 mol =2×1.75
Explanation:
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b. 2O3(g)<=>3O2(g)
c. 2H2O(l)<=>2H2(g)+ O2(g)
d. 2Hg(s)+ O2(g)<=>2HgO(s)
e. C(s)+ O2(g)<=>CO2(g)
The minimum energy required to start a reaction is called activation energy (A.E.).
(Option C)
Activation energy is the energy barrier that reactant molecules must overcome to transform into products during a chemical reaction.
It is the energy difference between the energy levels of the reactants and the transition state on the reaction's potential energy diagram.
Enthalpy (E1 and E2) and heat of reaction are related to the energy changes during the course of a reaction but are not directly related to the energy barrier required to initiate the reaction.
Enthalpy (H) refers to the total heat content of a system, while heat of reaction (ΔH) represents the energy difference between the products and reactants at constant pressure.
Learn more about activation energy here: brainly.com/question/1380484
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