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lys-0071 [83]
3 years ago
6

Which of these is an example of a physical change?

Chemistry
2 answers:
VLD [36.1K]3 years ago
6 0
I would say A due to it needing physical streangth.
Goryan [66]3 years ago
4 0
Is it a multiple choice?
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A sample of water is heated from 60.0 °C to 75.0°C by the addition of 140 j of
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Mass of the water : 2.23 g

<h3>Furter explanation</h3>

Heat

Q = m.c.Δt

m= mass, g

c = heat capacity, for water : 4.18 J/g° C.

ΔT = temperature

Q= 140 J

Δt = 75 - 60 = 15

mass of the water :

\tt m=\dfrac{Q}{c.\Delta T}=\dfrac{140}{4.18\times 15}=2.23~g

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Which type of reaction is represented by the generic equation ab cd right arrow. ad cb? combustion decomposition single replacem
arsen [322]

The illustration would be that of a double replacement reaction.

<h3>What are double replacement reactions?</h3>

They are reactions in which 2 ionic compounds exchange ions to form two new products.

Thus, in the reaction: ab + cd ----------> ad + cb

ab and cd are two ionic compounds. The b in ab is replaced by the d in cd while the d in cd itself is replaced by the b in ab. Hence, new products, ad and cd, are formed.

More on double replacement reactions can be found here: brainly.com/question/19267538

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2 years ago
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uysha [10]
The answer is double displacement is the answer
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Define a fluid very sort answer ​
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