At constant pressure, which of these systems do work on the surroundings? Check all that apply.

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1

At constant pressure, which of these systems do work on the surroundings? Check all that apply.

  1. 2A(g)+B(g)–>4C(g)
  2. 2A(g)+2B(g)–>3C(g)
    3.A(s)+2B(g)–>2C(g)
    4.2A(g)+B(s)–>3C(g)