Answer:
The pH at the equivalence point is 7.0.
Explanation:
This is because the solution only contains water and a salt that is neutral.
Since neither H+ or OH-, molecules remain in the solution.
We can conclude that the equivalence point is 7.0.
Answer:
Oxide of manganese, Potassium permanganate, Manganese bromide and manganese oxide.
Explanation:
1. Manganese dioxide
Its chemical formula is
. It is +4 oxidation state. It is a black solid which is fairly stable.
2. Potassium permanganate
Its chemical formula is
. It is commonly used in the laboratories as oxidizing agent. They appear black in color.
3 Manganese bromide
Its chemical formula is 
4. Oxides of manganese
Chemical formula is 
The most stable state of Manganese is +2 oxidation state.
The molecular weight of the substance is 30.46 g/mol.
<h3>What is molar mass?</h3>
Molar mass can be defined as the mass is divided by the number of moles of the substance.
Step 1: calculating the moles
Given, the mass is 177 g
Pressure is 1.18 atm.
The volume is 2.30 L
By the formula of ideal gas

Step2 -calculate the molecular weight
The moles are 0.581

Thus, the molecular weight is 30.46 g/mol
Learn more about molar mass
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Answer:
b i think.
Explanation:
good luck sorry if it is not correct
The (2) calcium atom, because when looking at the periodic table, we see that the calcium atom is in a location where according to the periodic table, has the lower electronegativities in respect to the other three choices. We see that it also has a lower electronegativity value than the others. Electronegativity is the attraction constant for the electrons in a chemical bond. The higher the electronegativity, the higher the attraction of the electrons. Fluorine has the highest electronegativity with 4.0.