Answer:That all noble gases will have 8 valence electrons which makes a atom stable
Explanation:
It is a chain of amino acids and the subunit of a protein
The number of moles of each atom present in 5 moles of Cu₃(PO₄)₂ are:
- 15 moles of Cu
- 10 moles of P
- 40 moles of O
<h3>Description of Cu₃(PO₄)₂</h3>
- 1 mole of Cu₃(PO₄)₂ contains
- 3 moles of Cu
- 2 moles of P
- (2×4) = 8 moles of O
<h3>How to determine the mole of each atom </h3>
The moles of atom present in 5 moles of Cu₃(PO₄)₂ can be obtained as follow
<h3>For Cu</h3>
1 mole of Cu₃(PO₄)₂ contains 3 moles of Cu.
Therefore,
5 moles of Cu₃(PO₄)₂ will contain = 5 × 3 = 15 moles of Cu
<h3>For P</h3>
1 mole of Cu₃(PO₄)₂ contains 2 moles of P.
Therefore,
5 moles of Cu₃(PO₄)₂ will contain = 5 × 2 = 10 moles of P
<h3>For O</h3>
1 mole of Cu₃(PO₄)₂ contains 8 moles of O.
Therefore,
5 moles of Cu₃(PO₄)₂ will contain = 5 × 8 = 40 moles of O
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Answer:
Strong Electrolyte
Explanation:
Electrolytes are classified into strong and weak electrolytes. Strong electrolytes are electrolytes that completely dissociate in an aqueous solution and are as well good conductors of electricity while weak electrolytes are those that are not completely dissociated in an aqueous solution and are not very good conductors of electricity.
Examples of strong electrolytes are strong acid, strong base, and salts. Examples of weak Electrolyte are weak acids and weak bases.
Thus the correct answer is strong electrolytes.
Answer:
[NaOH} = 0.4 M
Explanation:
In a reaction of neutralization, we determine the equivalence point of the titration. In this case, we have a strong base and a strong acid.
(H₂SO₄, is considered strong, but the first deprotonation is weak)
2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O
As we have 2 protons in the acid, we need 2 OH⁻ from the base to form 2 molecules of water.
In the equivalence point we know mmoles of base = mmoles of acid
Let's finish the excersise with the formula
25 mL . M NaOH = 28.2 mL . 0.355M
M NaOH = (28.2 mL . 0.355M) / 25 mL → 0.400