The boiling temperature of nitrogen is â195.8 Â°C (â320.4 Â°F), about 13 Â°C (â23 Â°F) below that of oxygen, which is therefore left behind. Nitrogen can also be produced on a large scale by burning carbon or hydrocarbons in air and separating the resulting carbon dioxide and water from the residual nitrogen.
Acidic foods like citrus fruits can stimulate acid production and increase heartburn. Avoid oranges, grapefruit, lemons and their juice. Like citrus fruits, tomatoes and products made from tomatoes (tomato sauce and paste, tomato juice) can stimulate the stomach to produce more acid.
The good news is that heartburn is largely avoidable if you steer clear of the top 10 heartburn foods. It also helps to avoid certain classic heartburn-inviting situations. From coffee and liquor to tomatoes and grapefruit, experts tell WebMD that certain foods are known heartburn triggers. Here's what you need to know about the top 10 heartburn foods. Heartburn and Tangy Citrus Fruits. Oranges, grapefruits and orange juice are classic heartburn foods. These are very acidic, says Robynne Chutkan, MD.