Answer:
1. SnO2 = 1; H2 = 2; Sn = 1; H2O = 2
2. I mole of SnO2 is required to react with 2 moles of H2 to produce 1 mole of Sn and 2 moles of H20.
The balanced equation represents 1 mole of SnO2
3. Total mass of reactants and products are each 154.71g respectively
Explanation:
1. According to the law of conservation of mass, the total mass of reactants in a chemical reaction is equal to the mass of products.
Therefore, a balanced chemical equation has equal number of moles of each atom on the reactants side and on the product side. The balanced chemical equation for the reaction above will be:
Sn02 + 2H2 + Energy -----> Sn + 2H2O
Sn has 1 mole of atoms on both sides
O has 2 moles of atoms on both sides
H has 4 miles of atoms on both sides.
2. According to the balanced chemical equation above,
1 mole of SnO2 reacts with 2 moles of H2 to produce 1 mole of An and 2 moles of H20.
This balanced equation represents 1 mole of SnO2.
3. The atomic masses of Sn, O and H are 118.71g, 16g and 1g respectively.
Therefore, the molar masses of the reactants and products are;
SnO2 = 118.71 + 16 * 2 = 150.72g
H2 = 2 *1 = 2g
H2O = 2 * 1 + 16 = 18g
Total mass of reactants = 150.71g + 2 * 2g = 154.72g
Total mass of products = 118.71 + 2 * 18g = 154.71g
