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Setler79 [48]
3 years ago
11

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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Explanation:

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I need to know the following above
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IF IT IS HOT AND CONCENTRATED THEN:

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The molecular formula of morphine, a pain-killing narcotic, is c17h19no3. what is the molar mass? what is the mass of 6.02 x 102
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<span>Molar mass is the mass of one mole of a substance, it can be a chemical element or a compound. It is a characteristic of each pure substance. We calculate it by adding up all of the masses of the atoms involved in the compound. We calculate as follows:
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C     17        12.01 g/mol          204.17 g/mol
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O      3         16.00 g/mol            48.00 g/mol
------------------------------------------------------------
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3 years ago
Consider the following reaction at constant P. Use the information here to determine the value of ΔSsurr at 355 K. Predict wheth
Elena-2011 [213]

Answer:

\Delta S_{surr} = + 0.32113\: kJ/K

Explanation:

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Pressure: P = constant

As we know, ΔH = -114 kJ ⇒ negative

Therefore, the given reaction is an exothermic reaction

Therefore, Entropy of surrounding at <em>constant pressure</em> is given by,

\Delta S_{surr} = \frac{-\Delta H}{T}

\therefore \Delta S_{surr} = -\left (\frac{-114 kJ}{355 K}  \right ) = + 0.32113\: kJ/K > 0

<u><em>In the given reaction:</em></u>

2NO(g) + O₂(g) → 2NO₂(g)

As, the number of moles of gaseous products is less than the number of moles of gaseous reactants.

\therefore \Delta S_{system} <  0

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<u>Therefore, at the given temperature,</u>

  • if \Delta S_{surr} > \Delta S_{system} \Rightarrow \Delta S_{total} > 0 then the given reaction is spontaneous
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6 0
3 years ago
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