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omeli [17]
3 years ago
12

Which statement about the energy of a phase change is true?

Chemistry
2 answers:
geniusboy [140]3 years ago
4 0
Since with melting the solid absorbs the heat of the environment in order to get the energy needed to phase change from solid to liquid, it means that melting is endothermic.  

Evidence of this is that if you have a hot tea, and you put ice cubes in it along with a thermometer, as the ice melts you will realize that the temperature of the tea would decrease thus insinuating that heat was removed from the tea (absorbed by the ice to melt).

Answer:  OPTION B
strojnjashka [21]3 years ago
3 0

Answer:

b

Explanation:

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What two sublevels of orbitals contain valence electrons? (s, p, d, or f)?
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Help I’m timed!
Anastaziya [24]

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slamgirl [31]
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4 0
3 years ago
How many grams of aluminum chloride are produced when 6.73 g of aluminum react with an excess of chlorine gas?
sergejj [24]

Answer:

33.3 g AlCl3

Explanation:

First:

You need a balanced chem equation.

2Al + 3Cl2 --->2AlCl3

So now you use this to set up train track method which helps us cancel out the units. Also we dont care about chlorine because it is excess.

6.73g Al x 1mol Al/26.98g Al x 2mol AlCl3/2molAl x 133.34g AlCl3/1molAlCl3

= 33.3 g AlCl3

8 0
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