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mixas84 [53]
2 years ago
10

Is food coloring dissolving in water a chemical change

Chemistry
2 answers:
zubka84 [21]2 years ago
6 0
Answer: There no chemical change, but there is a physical change.


Reason: When a substance dissolves in water, the substance retains its molecular identity and simply mixes throughout the water
GarryVolchara [31]2 years ago
5 0
No it is still the same element
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The strong nuclear force is always smaller then the electrostatic force true or false
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Answer: I think that the answer was False.

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3 years ago
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A sample of oxygen gas has a volume of 150.0 ml when its pressure is 0.947 atm. what will the volume of the gas be at a pressure
earnstyle [38]
Boyle's law gives the relationship between pressure and volume of gas. It states that for a fixed amount of gas at constant temperature, pressure is inversely proportional to volume of gas. 
PV = k
where P - pressure, V - volume and k - constant 
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where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation.
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3 years ago
how many grams of silver medal could be recovered from a reaction of 50 g silver nitrate and copper metal
Likurg_2 [28]

Answer:

Answer is: mass of copper is 127 grams.

Balanced chemical reaction: Cu(s) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s).

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n(Ag) = m(Ag) ÷ M(Ag).

n(Ag) = 432 g ÷ 108 g/mol.

n(Ag) = 4 mol.

From chemical reaction: n(Ag) : n(Cu) = 2 : 1.

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Explanation:

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3 years ago
1,4-Pentadiene has a AHhydro = -254 kJ/mol while trans-1,3-pentadiene has a AHhydra = -226 kJ/mol. Explain this difference in he
julsineya [31]

Answer:

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H(diene) depends on stability of diene.

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Hence, \Delta H_{hydro} is higher (less negative) for trans-1,3-pentadiene

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3 years ago
Within an atom, electrons A. are in motion inside the nucleus. B. are in motion outside the nucleus. C. are inside the nucleus a
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Hello! The correct answer is, B. are in motion outside the nucleus.


I hope this helped!

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