Answer:
1. A
2. B
3. A
4. B
5. B
6.C
7. B
8. A
Explanation:
SnO₂ + H₂ + energy → Sn + H₂0
The reaction is between Tin(iv) oxide and hydrogen gas to form tin and water molecules.
Notice the reaction is not balance therefore let us balance the equation. To balance the equation the number of atoms on both side (reactant and product)of the equation must be equal.
SnO₂ +2H₂ → Sn + 2H₂0
The equation is balanced . Â SnOâ‚‚ Â has coefficient of 1 , Hâ‚‚ has coefficient of 2, Sn has coefficient of 1 and Hâ‚‚0 has coefficient of 2.
Q5
SnO₂ + 2H₂→ Sn + 2H₂0
1 moles of SnOâ‚‚ will balance the equation
Q6
The reactant is on the left side of the chemical equation. Therefore the reactants are Tin(iv) oxide and hydrogen molecules (SnOâ‚‚ and Hâ‚‚)
Q7
The product is on the right side of the chemical equations .Therefore, the products are Tin and water molecules(Sn and Hâ‚‚0).
Q8
The reaction is an endothermic reaction because it absorb heat from it environment.
