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Soloha48 [4]
3 years ago
8

The _____ law of thermodynamics states that the tendency of the universe is to increase entropy.

Chemistry
2 answers:
MAVERICK [17]3 years ago
8 0
<span>The second law of thermodynamics states that the tendency of the universe is to increase entropy. </span>
alekssr [168]3 years ago
7 0
The answer is 2nd. The statement is a description of the second law of thermodynamics. 
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Predict how many H1 NMR signals (individual resonances, not counting splitting) are expected for the compound.
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Answer:

3 H1 NMR signals

Explanation:

NB: kindly check the diagram of the chemical compound in the attached picture.

This particular Question is based on the part of chemistry which is known as spectroscopy. Spectroscopy is used in the Determination or in identifying chemical compounds. H'NMR works on the principle of nuclear magnetic resonance.

In order to solve this question, one has to count the number of hydrogen in unique location. The diagram in the attached show how hydrogen is been counted.

The numbers of signals is the number of different chemical environments in which hydrogen atoms are located.

NB: signals is also the same as peak in H'NMR.

Hence, the number of H1 NMR signals in this chemical compound is 3.

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Why does the chemical reaction seen here obey the law of conservation of matter?

<u><em>Answer:</em></u>

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<u><em>Explanation</em></u>

  • As in chemical reactions, atoms bonds are break and new bonds are formed. As new substance are formed but overall they have same elements, no new elements come from outside or go to outside. In other words , rearrangement of atoms take place but number of atoms remained same.

                            NaOH + HCl -----> NaCl + H2O

  • As in above reaction there are the same number of atoms of each element shown on both sides .
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