Tính thể tích ở điều kiện tiêu chuẩn của một hỗn hợp khí gồm 4,4g CO2 và 3,2g O2. Tính số mol trong 3.10^23 phân tử nước
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- Shown are 1,2-difluoro-1,2-dimethylcyclopentane's three isomers.
- We can designate the stereocenters as either R or S in order to distinguish the three isomers.
- The stereocenters are located in the first compound, going from left to right (1R, 2S).
- Stereocenters are present in the middle compound (1R, 2R).
- Stereocenters are located in the third building on the right (1S, 2S).
- With stereocenters (1S, 2R), it is feasible to draw what appears to be another stereoisomer, but this compound is a meso-compound and is identical to (1R, 2S).
- Therefore, 1,2-difluoro-1,2-dimethylcyclopentane only has three distinct stereoisomers.
- In contrast to atomic connection, stereoisomers differ in the spatial arrangement of their atoms.
- The mirror-image stereoisomers, a non-superimposable pair of two molecules that are mirror images of one another, are one of their most intriguing types of isomers.
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