At a pressure of 4 mpa, the temperature at which liquid water boils is: (a) 250.4 (b) 100.0â°c (c) 143.6â°c (d) 29.0â°c

a)250.4 °C

Explanation:

Temperature at which pressure of water become equal to the surrounding pressure is called boiling temperature .

The  boiling  temperature of  water at 4 MPa is 250.4 °C.As we know that when  pressure of water increases then the boiling point of water  also increases.The boiling point of  water at  1 ar is 100 °C.So the boiling point of substance is not constant it varies with environment .

answer:

i ryan lol