118 elements

How is the atomic mass calculated? To calculate the atomic mass of an element, multiply the mass of each isotope by its natural abundance, expressed as a decimal, and then add the products.

Scientific definitions for xenon A colorless, odorless element in the noble gas group occurring in extremely small amounts in the atmosphere. It was the first noble gas found to form compounds with other elements. Xenon is used in lamps that make intense flashes, such as strobe lights and flashbulbs for photography.

Au

1 kg of uranium will create 24,000,000 kWh of power!

Nuclear is a zero-emission clean energy source. It generates power through fission, which is the process of splitting uranium atoms to produce energy. According to the Nuclear Energy Institute (NEI), the United States avoided more than 476 million metric tons of carbon dioxide emissions in 2019.

In the previous page we saw that with one tonne of either uranium or thorium, we can produce a gigawatt year of electricity (1GWye), the amount you’ll need to power a modern city with a million inhabitants for a year.

20 billion calories

roughly 20 billion calories

1. Mel’s Country Café in Texas sells the Mega Mel Burger with 1.5 pounds of ground beef, a pound of bacon, 1/4 pound of American cheese, lettuce, tomatoes, pickle and bun. It weighs in at an estimated 4,556 calories.

Here are 20 foods that are generally unhealthy — although most people can eat them in moderation on special occasions without any permanent damage to their health.

1. Sugary drinks.
2. Most pizzas.
3. White bread.
4. Most fruit juices.
5. Sweetened breakfast cereals.
6. Fried, grilled, or broiled food.
7. Pastries, cookies, and cakes.