A scientist measures the vapor pressure of a liquid. At 15° C, the vapor pressure was 19 kilopascals. At 25° C, it was 31 kilopascals. At 35° C, it was 59 kilopascals. Which statement can be inferred from the observations?

A. Increasing temperature alters the volume of the liquid
B. Increasing temperature decreases vapor pressure
C. Increasing temperature does not affect vapor pressure
D. Increasing temperature increases vapor pressure

D. Increasing temperature increases vapor pressure  

Explanation:

When the temperature increased, the vapour pressure increased.  

A is wrong. The question says nothing about the volume of the liquid.

B and C are wrong. Increasing temperature increases vapour pressure.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

what is the question?