Answer:
(edit: nvm I figured it out, here is the answer)
Explanation:
25
There are 25 protons in an atom of Mn-51 even if the atom has a charge of +1. The proton number also defines the atomic number of an atom.
Explanation:
The proton number of the atoms of an element never change without changing the type of atom/ element. Therefore, in other words, the atomic number (which is equivalent to proton number) remains the same across all isotopes of an element. Even when the atoms lose some electrons, the proton number remains the same.
Manganese (Mn) has atomic number 25. Meaning it has 25 protons. This proton number remains the same even if the Mn atoms are charged.
Learn More:
For more on atomic number of atoms check out;
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Answer: 8.25 moles of oxygen are produced.
Explanation: The reaction follows:
By Stoichiometry,
As, 4 moles of Aluminium is produced by 2 moles of aluminium oxide
11 moles of aluminium will be produced by = 
Now, 2 moles of aluminium oxide produces 3 moles of oxygen, so
5.5 moles of Aluminium oxide will produce = 
Hence, 8.25 moles of oxygen will be produced.
The enthalpy of the reaction is obtained as 4.876 kJ.
<h3>What is the enthalpy?</h3>
The enthalpy of a reaction is the heat that is absorbed or emitted in a reaction.
Given the reaction; N2(g) + 3H2(g) ⇔2NH3(g);
Number of moles of N2 = 6.44 grams/28 g/mol
= 0.23 moles
If 1 mole of N2 releases 21.2 kJ of energy
0.23 moles of N2 releases 0.23 moles * 21.2 kJ /1 mole
= 4.876 kJ
Learn more about enthalpy:brainly.com/question/13996238?
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A. Filtration
This is because of the layers of Filter it goes through to make sure it is pure.
