Which sample of water has the lowest vapor pressure?
1.
100 mL at 50°C
2.
200 mL at 30°C
3.
300 mL at 40°C
4.
400 mL at 20°C

400 ml at 20⁰C

Explanation:

VP ∝ Temp => Increasing temperature increases VP or decreasing temperature decreases VP. VP is independent of the quantity of liquid in consideration. Therefore, the sample at the lower temperature would have the lowest VP; i.e., 400-ml at 20⁰C.

Constitutional Monarch had its origins when King John was compelled to sign the Magna Carta that protected the barons from abusive of power from the king.  Later during the rise of Parliament, they presented the Bill of Rights that laid down a list of rights of individuals that further limited the power of the nobility.  When the English Civil War ended, the monarchy was restored but so as not to anger parliament, constitutional monarchy was establish that gave more power to the parliament than the king.

Explanation: