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nlexa [21]
2 years ago
5

Why is isn’t it chemical change if you mixed paint together?

Chemistry
2 answers:
VashaNatasha [74]2 years ago
8 0
There is no chemical change
jekas [21]2 years ago
6 0

Answer:

Not all color changes indicate a chemical reaction. Merely mixing colors is a physical change. No new substance is formed.Because the physical and chemical makeup of the pigments used to make colors vary, the rate and distance at which they travel along the paper towel varies, causing the colors to separate out

Explanation:

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8. A sample of chloroform is found to contain 24.0 g of carbon,212.8 g of chlorine, and 2.02 g of hydrogen. If a second sample o
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595.5

Explanation:

chloroform with 24.0 g C was 238.2 g

24g/238.2g= 60g/x

595.5

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3 years ago
5 meters
Feliz [49]

Answer:

9

Explanation:

7 0
2 years ago
99 POINTS Which volcanoes are the tallest Shield, Cinder Cones or Composite Cones?
charle [14.2K]
Shield volcanos are the tallest. The tallest one is Mauna Loa in Hawaii
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3 years ago
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Which type of allergy test, also called a subcutaneous test, introduces dilute solutions of allergens into the skin of the inner
alexgriva [62]

Answer:

The type of allergy test is scratch test.

Explanation:

In a scratch test also called a skin pri c k test or puncture test, an allergy provoking substance placed on the skin is gradually scratched  into the skin surface with the aid of a needle or lancet so as to detect bodily reactions to allergens. Some of the types allergens whose reactions are generally tested for include pollen, dust mites, molds and foods.

The scratch test takes about 5 to 10 minutes and it could cause slight pain and the may  result in itching feeling at the location where the allergen was introduced.

6 0
3 years ago
The enthalpy of vaporization (ΔH°vap) of benzene is 30.7 kJ/mol at its normal boiling point of 353.3 K. What is ΔS°vap at this t
vazorg [7]

<u>Answer:</u> The correct answer is Option c.

<u>Explanation:</u>

Vaporization is defined as the physical process in which liquid particles get converted to gaseous particles.

Liquid\rightleftharpoons Gas

The value of standard Gibbs free energy is 0 for equilibrium reactions.

To calculate \Delta S^o_{vap} for the reaction, we use the equation:

\Delta S^o_{vap}=\frac{\Delta H^o_{vap}}{T}

where,

\Delta S^o_{vap} = standard entropy change of vaporization

\Delta H^o_{vap} = standard enthalpy change of vaporization = 30.7 kJ/mol = 30700 J/mol    (Conversion factor: 1 kJ = 1000 J)

T = temperature of the reaction = 353.3 K

Putting values in above equation, we get:

\Delta S^o_{vap}=\frac{30700J/mol}{353.3K}=86.9J/(mol.K)

Hence, the correct answer is Option c.

8 0
3 years ago
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