What is the definition of chemical property?

2 answers:

5 0

Property or characteristic of a substance that can only be determined chemical if it is seen during a chemical change, and changes the properties and composition, not just a physical property like general shape

fenix001 [56]3 years ago

3 0

It is a type of property which is normally not visible but when it undergoes certain chemical reactions then this property is visible

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Iodine-131 is a radioactive isotope that is used as a medical tracer to study and treat the thyroid gland. This radioactive elem

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Bonjeur monseur, la french are here! it seems you have a problem with the elements on earth. lead seems correct since it is indeed a harmful material

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3 years ago

A wooden artifact from an ancient tomb contains 60% of the carbon-14 that is present in living trees. How long ago was the artif

noname [10]

Answer:

The age of the sample is 4224 years.

Explanation:

Let the age of the sample be t years old.

Initial mass percentage of carbon-14 in an artifact = 100%

Initial mass of carbon-14 in an artifact = $[A_o]$

Final mass percentage of carbon-14 in an artifact t years = 60%

Final mass of carbon-14 in an artifact = $[A]=0.06[A_o]$

Half life of the carbon-14 = $t_{1/2}=5730 years$

$k=\frac{0.693}{t_{1/2}}$

$[A]=[A_o]\times e^{-kt}$

$[A]=[A_o]\times e^{-\frac{0.693}{t_{1/2}}\times t}$

$0.60[A_o]=[A_o]\times e^{-\frac{0.693}{5730 year}\times t}$

Solving for t:

t = 4223.71 years ≈ 4224 years

The age of the sample is 4224 years.

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3 years ago

why would dry cleaners use nonpolar tetrachloroethylene, c2cl4, to get cheeseburger grease out of clothes?

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Grease is nonpolar. It is made up of lengthy hydrocarbon chains attached to glycerol (triacylglycerols). Because of this property, nonpolar solvents, such as tetrachloroethylene, can get grease out of clothes. This solvent acts by dissolving the grease, thereby removing it from clothes without leaving any residue.

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A 60 and N net force is applied to a 12 kg box which is the acceleration of the box?

GarryVolchara [31]

The relation between force and mass and acceleration is

$Force = mass X acceleration$