Answer:
74.75%
Explanation:
To calculate this, we simply add the mass of the salicylic acid and the mass of the copper sulphate.
The addition will yield the following.
Mass of salicylic acid recovered = 0.586g
Mass of copper sulphate recovered = 3.12g
The addition of both is = 0.586g + 3.12g = 3.706g
The percentage composition can be calculated by dividing this by the original mass of the mixture before crystallization and dividing by 100.
3.706/4.958 * 100 = 74.75%
8.97998 hope this helps! BRAINLIEST???
Answer:
A Calorimeter is a device used to measure the amount of heat involved in a chemical or physical process.
Explanation:
Ex- when an exothermic reaction ( accompanied by or requiring absorption of heat)occurs in solution in a calorimeter, the heat produced by the reaction is absorbed by the solution increasing its temperature.
- When an endothermic reaction (Heat evolving reaction) occurs, the heat required is absorbed from the thermal energy of the solution, decreasing its temperature.
A burning piece of coal which is releasing heat due to its combustion and is transferred to water.
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Answer:
4.1 * 10^5
Explanation:
410,000
As we can see, there are 4 zero and 1 number 1 after the first number so the number when written in scientific notation would be:
4.1 * 10^5
Hope this can help you :3
Answer:
Decomposition reaction
Explanation:
Decomposition reaction:
It is the reaction in which one substance is converted into the two or more products.
The decomposition reactions always involved one substance to decompose.
General chemical equation:
AB → A + B
The given chemical equation:
NH₄NO₃(s) → N₂O (g) + H₂O(g)
Ammonium nitrate is decomposed into nitrous oxide and water vapors.
Balanced chemical equation:
NH₄NO₃(s) → N₂O (g) + 2H₂O(g)
when it is rapidly heated it form N₂ and O₂.
2NH₄NO₃ → 2N₂ + O₂ + 4H₂O
By increasing the temperature decomposition is increased and in limited space due to pressure it may cause explosion.