The answer is A, you must repeat your experiment to ensure you results are accurate. That is the best way to know for sure and it is what you must do to every experiment.
Answer:
C. The rate of the reaction begins to decrease as the reactants are used.
Explanation:
a p 3 x
Answer:
Silver fluoride because it is the most soluble compared to the others.
Explanation:
Answer:
Thermal decomposition
Explanation:
Calcium carbonate can be broken down by heating. The following equation represents this chemical change.
CaCO₃(s) ⇒ CaO(s) + CO₂(g)
The scientific term for this process is thermal decomposition.
- Thermal refers to the fact that heat is required.
- Decomposition refers to the kind of reaction in which a big substance breaks down into smaller substances.
Answer:
7.19 g of Fe2O3 will produce 0.092 mole of iron
Explanation:
One mole of Fe2O3 reacts with 2 mole of Aluminum to produce one mole of Al2O3 and 2 mole of iron.
Mass of one mole of Fe2O3 = 159.69 g/mol
Thus, 159.69 g/mol of Fe2O3 produces two mole of Fe
7.19 g of Fe2O3 will produce
moles of iron
