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3 years ago

Which option is an example of a chemical property?

Chemistry

2 answers:

bulgar [2K]3 years ago

7 0

Reactivity
Hope it helps!

alexandr1967 [171]3 years ago

7 0

Answer: Option (3) is the correct answer.

Explanation:

A property which does not bring any change in the chemical composition of a substance is known as physical property.

For example, shape, size, mass, volume, density, boiling point, melting point etc of a substance are all physical properties.

Whereas a property which changes the chemical composition of a substance is known as chemical property.

For example, precipitation, reactivity, toxicity etc are chemical property.

Thus, we can conclude that out of the given options reactivity is an example of a chemical property.

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23.It is possible to dilute a solution by...Select one:a. adding more solute to the solution.b. adding more solvent to the solut

joja [24]

To dilute a solute in a solution, it is necessary to add a proper solvent for the reaction to occur, and adding more solvent will cause the solution to dilute even more, therefore the best answer will be letter B

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1 year ago

BRAINLIESTTT ASAP!!! PLEASE ANSWER!

sladkih [1.3K]

If the item or substance has changed into a state where you are able to change it back such as:

Water melting

Water freezing

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3 years ago

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Which will dissolve faster in water rock salt or granulated salt

Sladkaya [172]

Answer:

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Explanation:

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2 years ago

How many hours will it take for the concentration of methyl isonitrile to drop to 15.0 % of its initial value?

SpyIntel [72]

Answer:

The concentration of methyl isonitrile will become 15% of the initial value after 10.31 hrs.

Explanation:

As the data the rate constant is not given in this description, However from observing the complete question the rate constant is given as a rate constant of 5.11x10-5s-1 at 472k .

Now the ratio of two concentrations is given as

$ln (\frac{C}{C_0})=-kt$

Here C/C_0 is the ratio of concentration which is given as 15% or 0.15.

k is the rate constant which is given as $5.11 \times 10^{-5} \, s^{-1}$

So time t is given as

$ln (\frac{C}{C_0})=-kt\\ln(0.15)=-5.11 \times 10^{-5} \times t\\t=\frac{ln(0.15)}{-5.11 \times 10^{-5} }\\t=37125.6 s\\t=37125.6/3600 \\t= 10.31 \, hrs$

So the concentration will become 15% of the initial value after 10.31 hrs.

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2 years ago

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In which layer(s) would a solid cube with 6 cm sides and mass of 270 g float? Explain.

DIA [1.3K]

The buoyancy of an object is dictated by its density. So let us calculate for density, where:density = mass / volume
Calculate the volume first of a solid cube:volume = (6 cm)^3 = 216 cm^3 = 216 mL
Therefore density is:density = 270 g / 216 mLdensity = 1.25 g / mL
Therefore this object will float in the layer in which the density is more than 1.25 g / mL.

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3 years ago