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oksano4ka [1.4K]
3 years ago
13

One situation indicates a physical change rather than a chemical change. which situation indicates a physical change

Chemistry
1 answer:
Goryan [66]3 years ago
3 0

if you were to fold a piece of paper into a bunch of pieces.

Explanation:

its just a different shape but it's still the same piece of paper

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Trans-2-butene does not exhibit a signal in the double-bond region of the spectrum (1600–1850 cm−1); however, ir spectroscopy is
Elza [17]
However <em>trans</em>-2-Butene does not give a characteristic peak in 1620-1680 cm⁻¹ region but still the presence of carbon double bond carbon can be detected by detecting following peaks in IR Spectrum.

1)  3010-3100 cm⁻¹:
                               As in trans-2-Butene a hydrogen atoms ate attached to sp² hybridized carbon, therefore the stretching of =C-H (C-H) bond will give a peak of medium intensity in the range of 3010-3100 cm⁻¹.

2)  675-1000 cm⁻¹:
                             Another peak which is given by the bending of =C-H (C-H) bond with strong intensity will appear in the range of 675-1000 cm⁻¹.
3 0
3 years ago
Consider the reaction when aqueous solutions of chromium(III) chloride and ammonium sulfide are combined. The net ionic equation
Dominik [7]

Answer:

2Cr³⁺(aq) + 3S²⁻(aq) ----> Cr₂S₃(s)

Explanation:

When aqueous solutions of chromium(III) chloride and ammonium sulfide are  mixed together, chromium (III) chloride and ammonium sulfide undergoes a double displacement reaction to produce chromium (iii) sulphide as a precipitate and ammonium chloride which remains in solution.

The general equation of the reaction is given below:

2CrCl₃(aq) + 3(NH₄)₂S(aq) ----> Cr₂S₃(s) + 6NH₄Cl(aq)

The net equation of the reaction is given below:

2Cr³⁺(aq) + 3S²⁻(aq) ----> Cr₂S₃(s)

7 0
3 years ago
Compare and contrast physical layers and compositional layers.
Yuki888 [10]

Answer:

Compositional Layers

The Earth has different compositional and mechanical layers. Compositional layers are determined by their components, while mechanical layers are determined by their physical properties. The outermost solid layer of a rocky planet or natural satellite.

7 0
3 years ago
Which of the following characteristics is NOT associated with El Niño?
Evgesh-ka [11]

Answer:

I think it's Cooler waters rising to the surface of the ocean.

Explanation:

I've heard of all the others happening. :)

3 0
2 years ago
Read 2 more answers
Plz answer 15 points both 8 and 9 please <br>thanks:)
aliina [53]
1the carrier would be 3 as to the the yes and the no differ from 2 which would mean they are the same, but if you  take three , you have  more equal  signal, giving it a better digital quality
2incorect, primary, and clocks-worth both as well also use binary ode, because they all have a timmid connetion between gavity waves
7 0
3 years ago
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