It is purely called the Atomic Mass
Answer:
Sulfuric acid + Zinc = reactant
Zinc sulfate + hydrogen = product
Lead oxide + carbon = reactant
lead + carbondioxide = product
Explanation:
Chemical equation:
Sulfuric acid + Zinc → Zinc sulfate + hydrogen
H₂SO₄ + Zn → ZnSO₄ + H₂
In this reaction sulfuric acid and zinc react to produce the zinc sulfate and hydrogen. That's why sulfuric acid and zinc are reactant. While zinc sulfate and hydrogen are products.
2nd reaction:
Lead oxide + carbon → lead + carbondioxide
2PbO + C → 2Pb + CO₂
In this reaction Lead oxide and carbon react to produce the lead and carbondioxide. That's why Lead oxide and carbon are reactant. While lead and carbondioxide are products.
The answer is (3) 3. The sharing of electrons is important to help elements get 8 electrons in the outer shell to be stable. To achieve this aim, the nitrogen needs to share three pairs of electrons.
The measured bond<span> angles of these compounds (H</span>2O 104.5º & NH3<span> 107.3º) show that they are closer to being tetrahedral than trigonal or linear. Of course, it is the configuration of atoms (not electrons) that defines the the </span>shape of a molecule<span>, and in this sense ammonia is said to be pyramidal (not tetrahedral).</span>
