R-290 corresponds to which hydrocarbon?

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Prepare for the SkillCat EPA Type 2 Test with interactive flashcards and multiple-choice questions. Each question is accompanied by hints and explanations. Get ready to pass your exam!

Multiple Choice

R-290 corresponds to which hydrocarbon?

Explanation:
R-290 is propane. In refrigerant naming, the R‑numbers identify a specific hydrocarbon, and R‑290 corresponds to the chemical propane, which has the formula C3H8. The other hydrocarbons listed have different structures: methane is CH4 (one carbon), ethane is C2H6 (two carbons), and butane is C4H10 (four carbons). So propane uniquely matches R‑290. Note that propane is flammable, so systems using R‑290 require appropriate safety measures.

R-290 is propane. In refrigerant naming, the R‑numbers identify a specific hydrocarbon, and R‑290 corresponds to the chemical propane, which has the formula C3H8. The other hydrocarbons listed have different structures: methane is CH4 (one carbon), ethane is C2H6 (two carbons), and butane is C4H10 (four carbons). So propane uniquely matches R‑290. Note that propane is flammable, so systems using R‑290 require appropriate safety measures.

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