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show that 134 is the appropriate label for CH2FCF3. Why is an a or b designation...

show that 134 is the appropriate label for CH2FCF3. Why is an a or b designation also required to uniquely characterize the latter compound? What would be the code numbers for the HCFs in R-410a, namely CH2F2 and CHF2CF3? Does the number 410 correspond to the code number for either of these compounds?

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