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jekas [21]
3 years ago
13

What volume of a 6.67 M NaCl solution contains 3.12 mol NaCl

Chemistry
1 answer:
jonny [76]3 years ago
5 0
What's the big M? Molecular weight or mol?
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An unknown compound displays singlets at δ 2.1 ppm and 2.56 ppm in the ratio of 3:2. what is the structure of the compound?
olasank [31]

1) As can be seen from any 1H NMR chemical shift ppm tables, hydrogens which have δ values from 2ppm to 2.3ppm are hydrogens from carbon which is bonded to a carbonyl group. From this, we can conclude that our hydrogens belong to the type, but from 2 different alkyl groups because of 2 different signals.

 

2) So, one alkyl group is CH3 and second one can be CH or CH2.

 

3) If we know that ratio between two types of hydrogens is 3:2, it can be concluded that second alkyl group is CH2. 


4) Finally, we don't have any other signals and it indicates that part of the compound which continues on CH2 is exactly the same as the first part.

The ratio remains the same, 3:2 ie 6:4

7 0
3 years ago
Explain the different principles that allow roller coasters to rip and roar around the tracks. In your response, include how ene
Jlenok [28]

Answer:

In the roller coasters the potential energy that is given is the gravitational potential energy, which this energy increases its value as the object moves away from the earth, that is to say, the more height the roller coaster acquires the more gravitational potential energy it will have, and Said train where people usually get on the roller coaster will descend or descend with greater acceleration.

This gravitational potential energy once the mountain begins to descend or descend is converted into kinetic energy

Explanation:

This that we wrote above is considering that the roller coaster does not have curved routes but rectilinear, in the case that it had curved routes, a force would be added in addition to those written that is the centripetal force, it is the same force that appears in the centrifuges or dryers of clothes or the same washing machine. This force, the centripetal force is the force that draws a moving object, in a curvilinear path, towards the center of the curvature.

8 0
3 years ago
20 Points to first correct answer! Identify the missing coefficient in the balanced equation and classify the type of reaction.
Vedmedyk [2.9K]

Answer:

.Combination

Explanation:

4 0
2 years ago
__________ lenses refract light rays in toward a central point. When this lens is held close to your eye, the image is magnified
andreev551 [17]
The answer would be either a concave or b convex
7 0
3 years ago
Read 2 more answers
Which wave is carrying the most energy? A wave with large amplitude. A wave with very large amplitude. A wave with small amplitu
tankabanditka [31]

Answer:

A wave with small amplitude.

Explanation:

Amplitude us inversely proportional to energy so the smaller the amplitude, the higher the energy.

Hope it helps.

4 0
3 years ago
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