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tiny-mole [99]
2 years ago
7

Does his model correctly show why the properties of the ending substances are different from the properties of the starting subs

tances? Describe what could be correct or incorrect about his model.
Chemistry
1 answer:
topjm [15]2 years ago
6 0

Answer:

Samira's model is incorrect because not all atoms are accounted for

Explanation:

The image of Samira's model has been attached to this answer to enhance the explanation.

What is depicted in that model is rightly regarded as a chemical change. In a chemical change atoms of substances are rearranged as new substances are formed.

However, all atoms in the products must also be found in at least one of the reactants. In this case we have an atom in one of the products that is not accounted for. Hence the model is incorrect.

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If liquid water is exposed to normal atmospheric pressure, what needs to change in order to change its state of matter?
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Mass of water because then it will change his States of matter
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3 years ago
What is the matter of science​
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The following chemical reactants produce the ester ethyl ethanoate (C4H8O2): C2H6O + CH3COOH What type of reaction occurs to mak
nydimaria [60]

Answer:

Esterification reaction

Explanation:

An esterification reaction is an organic reaction involving an organic acid and an alkanol to give an ester or an ethanoate and water

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8 0
3 years ago
If 18.0 g of CO2 is produced in the reaction of C2H2 with O2 to form CO2 and
Tanya [424]

Answer:

3.68 g

Explanation:

n_{CO2} = 18 ÷ 44 = 0.4

2C2H2 + 5O2 → 4CO2 + 2H2O

   2       :    5      :    4      :    2  

                             0.409                 (moles)

⇒ n_{H2O} = 0.409 × 2 ÷ 4 = 0.2045 moles

⇒ m_{H2O} = 0.2045 × 18 = 3.68 grams

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During which process in the water cycle does water release thermal energy? Explain how you know.​
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Agreed with the person on top ^^^
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2 years ago
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