Which best statement best describes what makee a base weak?
a base is weak when it forms few ions in water.
a base is weak when only a little of its dissolved in water.
a base is weak when its concentration is high.
a base is weak when it totally forms ions in water.

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?