Question: please help me woth this question 27 It takes 26 s for 10 ml of H2 gas to effuse through a porous membrane, it takes

please help me woth this question 27 It takes 26 s

please help me woth this question

27 It takes 26 s for 10 ml of H2 gas to effuse through a porous membrane, it takes 130 s for 10 ml of an unknown gas under identical conditions to effuse, hence, molar mass of the unknown gas (in g mol-1) is (1 Point) 50 g 609 70 g 809 28 A hot fluid at the temperature of 100 C to be cooled to 40 C using a cooling water that enters the heat exchanger at 30 C and leaves at 35 C. What is the LMTD temperature for the co- current heat exchanger? (1 Point) 32.46 C 45 C 65 C 24.63 C

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