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3 years ago

Predict how many H1 NMR signals (individual resonances, not counting splitting) are expected for the compound.

Chemistry

1 answer:

Lyrx [107]3 years ago

3 0

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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Answer:

320 g

Step-by-step explanation:

The half-life of Co-63 (5.3 yr) is the time it takes for half of it to decay.

After one half-life, half (50 %) of the original amount will remain.

After a second half-life, half of that amount (25 %) will remain, and so on.

We can construct a table as follows:

No. of Fraction Mass

half-lives t/yr Remaining Remaining/g

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2 10.6 ¼

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4 21.2 ¹/₁₆

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The mass of the original sample was 8 × 40 g = 320 g

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3 years ago

How many molecules of water can fit in one teaspoon?

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How many carbon atoms are present in a 10.0g sample of C3H8

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Answer:

4.09ₓ10²³ atoms are contained in 10g of C₃H₈

Explanation:

1 mol of C₃H₈ has 3 mol of carbon and 8 mol of hydrogen.

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In 44 g of C₃H₈ we have 3 mol of C

In 10 g of C₃H₈ we'll have (10 . 3)/ 44 = 0.681 mol

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3 years ago

Read 2 more answers