Answer: No, boiling water is a physical change.
Explanation:
Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance.
Boiling water is a physical change as liquid changes to gaseous state and no new substance is being formed.
Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state.
Out of the many tests that is used to determine the presence of cyclohexanol in a product is the Lucas test.
The Lucas test is a chemical reactant that is used to identify the presence and level of alcoholism in a given solution. Cyclohexanol shows many chemical properties as do most substances, one of those property is the presence of an alcohol group.
The presence of this chemical group makes it possible to test for cyclohexanol using the Lucas test. The Lucas test will cause reactions in the presence of alcohol and convert alcohols into chloroalkanes, which is nearly insoluble in aquatic solutions.
From above, we concluded that a positive result will look like the solution separates into a cloudy chloroalkane-containing part on top of a much clearer layer.
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Answer:
Explanation:
1. Calculate the decay constant
The integrated rate law for radioactive decay is 1
where
A₀ and A_t are the counts at t = 0 and t
k is the radioactive decay constant
2. Calculate the half-life
The half-life for decay is .