Final answer:
When a can of soda is opened at high elevations, the decrease in atmospheric pressure causes the dissolution of carbon dioxide gas in the soda to decrease. As a result, the soda will produce more bubbles initially as the gases rapidly exit the solution. However, if the can is left open for an extended period of time, the soda will eventually become flat.
Step-by-step explanation:
When a can of soda is opened at high elevations, the atmospheric pressure decreases. This decrease in pressure affects the solubility of gases in the soda. According to Henry's Law, the solubility of a gas increases as the pressure of the gas increases. So, when the can of soda is opened at high elevations, the pressure above the liquid decreases, causing some of the dissolved carbon dioxide gas to rapidly exit the solution in the form of small bubbles. As a result, the soda will produce more bubbles because the gases cannot remain dissolved at low pressures. Over time, if the can is left open, more and more carbon dioxide will come out of the liquid and the soda will eventually become flat.