Answer the following with True or False Please help me ASAP

Answer the following with True or False. Please help me ASAP.

1) Quality can be defined as the ratio of the volume of gas to the total volume. (True or False)

2) A Heat engine with 100% efficiency is impossible to build because it violates the first law of thermodynamics. (True or False)

3) Entrophy generation is a state property. (True or False)

4)The COP of a refrigerator is always greater than 1. (True or False)

5) The mass is constant in a closed system. It is also constant in a steady-flow control volume. (True or False)

Thanks.

1)false

2) true

3)true

4) false

5) true