You may find bellow the answers and the balanced chemical reactions.
Explanation:
2) The chemical reaction is:
2 Na + I₂ → 2 NaI
Na - sodium
I - iodine
In this reaction there are 2 reactants and 1 product.
The reaction is balanced.
3) The chemical reaction is:
N₂ + O₂ → 2 N₂O
N - nitrogen
O - oxygen
In this reaction there are 2 reactants and 1 product.
The reaction is not balanced, the balanced reaction is:
2 N₂ + O₂ → 2 N₂O
4) The chemical reaction is:
N₂ + 3 H₂ → 2 NH₃
N - nitrogen
H - hydrogen
In this reaction there are 2 reactants and 1 product.
The reaction is balanced.
5) The chemical reaction is:
2 KI + Cl₂ → 2 KCl + I₂
K - potassium
I - iodine
Cl - chlorine
In this reaction there are 2 reactants and 2 products.
The reaction is balanced.
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balanced chemical reactions
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Answer:
form an aqueous solution
Explanation:
The same substance is present before and after the change. Making the aqueous solution is physical change.
Answer:
87 (whatever unit its using)
Answer: The bond formed between magnesium and oxygen is an ionic bond.
Explanation:
An ionic bond is formed when an atom transfer its valence electrons to another atom.
Whereas, a covalent bond is formed by the sharing of electrons between the atoms.
Silicon and oxygen forms silicon dioxide. Silicon has 4 valence electrons which are shared with each oxygen atom. Hence, silicon and oxygen forms a covalent bond.
Oxygen and oxygen shares two pairs of electrons therefore, a covalent bond is formed between oxygen and oxygen.
A covalent bond is formed between carbon and hydrogen as carbon has 4 valence electrons which are shared with four hydrogen atoms.
Magnesium has 2 valence electrons which are transferred to the oxygen atom in order to complete its octet.
Therefore, the bond formed between magnesium and oxygen is an ionic bond.
I think the answer is <span>mercury </span>