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Anna007 [38]
3 years ago
5

Whick ions profuce similar colors in the flame tests?

Chemistry
1 answer:
arlik [135]3 years ago
5 0

Ba2+ and Cu2+, and Sr2+ and Li+

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pantera1 [17]
Depositional landforms are the visible evidence of processes that have deposited sediments or rocks after they were transported by flowing ice or water, wind or gravity. Examples include beaches, deltas, glacial moraines, sand dunes and salt domes
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3 years ago
A Questic
Ivanshal [37]

Answer:

No, it is not feasible because the Gibbs free energy change is positive

Explanation:

∆Hreaction= (-602 KJ/mol) - (-348 KJ/mol) = -254 KJ/mol

∆Sreaction = (42 + 27) J/Kmol - (33 + 44) J/K = -8J/Kmol

From;

∆G = ∆H - T∆S

∆G = 254 × 10^3 J/mol - [340K × (-8 J/Kmol)]

∆G = 2.57 × 10^5 J/mol

Note that when the change in free energy is positive, a reaction is non spontaneous. Only a reaction that has a negative change in free energy is spontaneous.

3 0
3 years ago
Which best describes the geologic time scale? It explains why events happen throughout Earth’s history. It presents the correct
sertanlavr [38]

Answer:

Which best describes the geologic time scale? It explains why events happen throughout Earth’s history. It presents the correct sequence of events in Earth’s history. It is used to determine the absolute dates in years for different periods.

3 0
3 years ago
PLEASE HELP ME I DONT HAVE MUCH TIME!! WILL GIVE TEN POINTS
bagirrra123 [75]

For the compound B the following statement is correct-

B. It is an ether because it is unable to form a hydrogen bond, so it is less soluble in water.

The solubility of alcohol in water depends upon the capability of formation of hydrogen bond in the solute. Now in alcohol the -OH group is polar in nature which enhance the possibility of hydrogen bond formation and it is more soluble in water.

On the other hand although there presence a -O- functional group in ether. It is less soluble in water due to non polarity of the functional group.

From the given data it is seen that compound A is more soluble in water than compound B. Thus it may be predicted that compound A is alcohol and B is ether.

Henceforth, for the compound B the following statement is correct-

B. It is an ether because it is unable to form a hydrogen bond, so it is less soluble in water.

The reason of incorrect options:

A. compound B cannot be an alcohol as it is less soluble in water.

C. In ether the functional group is -O-, thus electronegative atom (O) is present.

D. As both the compound (alcohol and ether) has equal molecular mass thus the organic chain will be same in alcohol and the hydrogen bond interaction will be more prominent than the dispersion force between the -OH group.  

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4 years ago
How heat moves from one end of a solid to another
pantera1 [17]
In conduction, the thermal energy of a particle is transferred to other particles throughout the solid. The particles with more energy are transferred to those with less.
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