Why does lava containing large amounts of dissolved gases generally produce a more violent explosion than lava that contains small amounts of dissolved gases?

Why do ingredients separate sometimes when you are mixing? What determines the number of protons in one atom? What are molecules that are acted upon by enzymes called? How many people died in the katla eruption in 1918? What is a cold dry treeless region where mosses grasses and lichens grow? How many BTU does kW electric heater put out running at three phase 465 volts? What is the diaphaneity of magnetite? How much soil was lost in the dust bowl? Challenges of population growth? What do the initials i of m stand for? How many earth cycles are there? Which type of power is dominant when a leader is respected for his or her knowledge? What planet revolves around the sun every 249 days? Do the Nasal conchae mainly work on inhalation to warm and moisten air? What food has the least amount of lipids? Why were polynomials replaced with the system of binomial nomenclature? What are the steps to dimensional analysis? How does cyanide kill a cell? Where can you find the track Way Down South by the Fabulous Thunderbirds? Does plasmodium falciparum have flagella?

Why does lava containing large amounts of dissolved gases generally produce a more violent explosion than lava that contains small amounts of dissolved gases?