What percentage of the atmosphere is made up of nitrogen and oxygen round to the nearest whole number no units?

What percentage of the atmosphere is made up of nitrogen and oxygen round to the nearest whole number no units?

By volume, the dry air in Earth’s atmosphere is about 78.09 percent nitrogen, 20.95 percent oxygen, and 0.93 percent argon. A brew of trace gases accounts for the other 0.03 percent, including the greenhouse gases carbon dioxide, methane, nitrous oxide and ozone.

What law states that if O2 makes up 21% of the atmosphere it will exert an approximate partial pressure equal to 160 MMHG if the atmospheric pressure is 760 MMHG?

Overview. Dalton s law of partial pressures states that the total pressure of a mixture of gases is equal to the sum of all of the partial pressures of the component gases.

What would happen if the oxygen level decreased on Earth?

Terrestrial life will cease to exist, as will aquatic life. The ozone layer – which is made up of oxygen – will deplete, exposing Earth and its oceans to high levels of ultraviolet light and heat from the burning sun.

What would happen if the world lost oxygen for 5 seconds?

If the world lost its oxygen for five seconds, the earth would be an extremely dangerous place to live in. Due to the severe sunburn, our inner ear would explode. The air pressure on the earth would drop 21 per cent and our ears would not get enough time to settle. Now, take a deep breath of oxygen.

What is the percent composition of the Earth’s atmosphere?

Earth’s atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.

What percentage of the Earth’s atmosphere is nitrogen?

78 percent
The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

What is the composition of the Earth’s atmosphere?

Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.

What is the composition of the atmosphere on Earth?

Earth’s Atmosphere Composition: Nitrogen, Oxygen, Argon and CO2 1 Nitrogen (78.1%) 2 Oxygen (20.9%) 3 Argon (0.93%) 4 Carbon Dioxide (0.04%) 5 Trace Gases 6 Water Vapor (Variable)

Why is nitrogen more abundant in the atmosphere than oxygen?

Based on the relative volumes of the gases in Earth’s atmosphere, nitrogen is actually more than 3 times more than oxygen. Because the troposphere is the lowest atmosphere layer, it contains 75 percent of atmosphere’s mass. From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO2 and trace gases.

What are the two most abundant gases in the atmosphere?

Earth’s Atmosphere Composition: Nitrogen, Oxygen, Argon and CO 2. Some people are surprised to learn that oxygen isn’t the most abundant gas in Earth’s atmosphere composition. Based on the relative volumes of the gases in Earth’s atmosphere, nitrogen is actually more than 3 times more than oxygen.

What is the percentage of oxygen in the Earth’s atmosphere?

Oxygen (20.9%) Earth has the conditions for life to flourish. Oxygen is essential to human life as our lungs respire oxygen and uses it in metabolism. While nitrogen is an extremely stable gas, it’s difficult to break up and use for chemical processes. But oxygen will readily take part in chemical reactions because it’s an electron thief.