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 . SnO₂ has coefficient of 1 , H₂ has coefficient of 2, Sn has coefficient of 1 and H₂0 has coefficient of 2.
Q5
SnO₂ + 2H₂→ Sn + 2H₂0
1 moles of SnO₂ 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 (SnO₂ and H₂)
Q7
The product is on the right side of the chemical equations .Therefore, the products are Tin and water molecules(Sn and H₂0).
Q8
The reaction is an endothermic reaction because it absorb heat from it environment.
