These percentages are most likely mass percentages. Therefore, determine the mass of each element in 100g of the compound.
<span>75g C, 25g H. </span>
<span>Divide these masses by their molar mass to find the ratios of the moles of element in the compound. Divide these values by the smallest of the two/three to get the ratios. </span>
<span>6.25:25 C:H --> 1:4 </span>
<span>So the formulae are CH4 (methane).</span>
Answer:
Explanation:
The peak at 1700-17200 cm⁻¹ in the infrared spectrum shows the existence of a carbonyl group (C=O). The appearance of an OH peak is shown by the broad peak at 2500-3000 cm⁻¹. The peak at 12.4 ppm in 1H NMR identifies the existence of carboxylic acid. The peaks at 6.78 ppm and 7.11 ppm suggest that the prevalence existence of a benzene ring in the molecule. Because these peaks are doublets, the benzene is being para-substituted.
The existence of the CH2 group is shown by the peak at 2.49 ppm, which integrates 2 hydrogens. Provided that the breaks are doublets, It would be bound to another CH2 molecule as well as carbon that is devoid of hydrogen (benzene carbon).
The existence of the CH2 group, which is linked to the above-listed CH2 group, is also demonstrated by the next peak at 2.8 ppm. It must be bonded with carbonyl carbon so it breaks as a doublet. As a result, it has a greater chemical transition. The CH3 category is shown by the peak at 3.72 ppm. Its chemical change is strong, indicating that CH3 is linked to an oxygen atom that is linked to benzene.
NMR details at 13C. Carbonyl carbon of acid has a high (peak) at 173.89 ppm. Benzene carbon peaks range from 113.55 to 157.87 ppm. The peak at 64 is made up of CH3, while the other two are made up of CH2.
The structure of the diagram is shown below with its degree of unsaturation.
Answer:
<em>The order of decreasing atomic radius is bismuth, antimony, phosphorus. Number 5.</em>
Explanation:
<em>The largest elements are the furthest to the left and down on the periodic table. The closer to the top right of the periodic table the smaller the element. </em>
<em>The atomic numbers are:</em>
- <em>bismuth = 83</em>
- <em>antinomy= 51</em>
- <em>phosphorus = 15</em>
<span>Coca-cola is similar to tomato juice because both are acidic drinks. Coca-cola is acidic because it is a carbonated drink. This means there is a presence of an acid in coke namely: carbonic acid and phosphoric acid. Tomato juice is also acidic because of the presence of vitamin c (ascorbic acid), but slightly less acidic than coke.</span>