An air conditioning system is using R-410A as the refrigerant and the condenser is cooled by water at a temperature of 35°C. The refrigerant is in the vapor state at the condenser outlet, and the pressure is 4.5 MPa. The refrigerant is in the liquid state at the evaporator outlet, and the pressure is 0.25 MPa. Determine the mass flow rate of the refrigerant and the coefficient of performance (COP).

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