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What is the mole fraction of oxygen in a gas mixture that is 37% oxygen and 63% nitrogen by volume?
Trial Marriage
A situation where a couple decides to live together for a period of time to test the compatibility of a lifelong commitment.
Cohabit
The action of living together and having a sexual relationship without being married.
Division of Labor
The allocation of different tasks or jobs to different people or groups, often based on factors such as skill, gender, or age, reflecting both economic efficiency and social norms.
Cohabiting Couples
Couples who live together in a long-term relationship without being legally married.
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