If a sample of water is boiling while the external pressure is 505 kpa, what is the vapor pressure of the water? . . a.505 kpa . b.101.3 kpa . c,0 kpa . d.1010 kpa .

If a sample of water is boiling while the external pressure is 505 kPa, then the vapor pressure of the water will also be 505 kPa. The vapor pressure needs to be equal to the external pressure for the water to boil. The correct option among all the options that are given in the question is the first option or option "a".

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

the value of x is equal to 0.