Explanation:
Chemical reactions occur when substances are transformed into other substances.
chemical reactions are generally categorized into four basic types:
- Combination or Synthesis- This involves the formation of a single product from two or more reactants.
- Decomposition or cracking: this is the formation of the of two or more products from a single reactant.
- Single replacement or single displacement - in this reaction type one substance is replacing another.
- Double replacement or double decomposition - involves an actual exchange of partners to form new compounds .
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Answer:
There must be an equal amount of each element on both sides of the equation.
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<span>Classify is the answer hope this helps :)</span>
Answer:
Boiling point
Explanation:
Distillation is one of the most widely used separation technique in chemistry. It is used to separate a mixture of liquid substances with different boiling point. Hence, the basis of the separation is BOILING POINT DIFFERENCE.
In the procedure, the liquid substances are heated until they turn gaseous, which they do at different times considering their different boiling points. The separated components are then converted back to liquid states in a process called CONDENSATION.
Answer:
–500KJ
Explanation:
Data obtained from the question include the following:
Heat of reactant (Hr) = 800KJ
Heat of product (Hp) = 300KJ
Enthalphy change (ΔH) =..?
The enthalphy change is simply defined as the difference between the heat of product and the heat of reactant i.e
Enthalphy change = Heat of product – Heat of reactant
ΔH = Hp – Hr
With the above formula, we can easily calculate the enthalphy change as follow
ΔH = Hp – Hr
ΔH = 300 – 800
ΔH = –500KJ.
Therefore, the overall energy change for the reaction between hydrogen and oxygen shown in the diagram above is –500KJ
