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What percentage of a star's total lifetime is spent on the main sequence?
Roughly 90% of a star's total lifetime is spent on the main sequence, where it fuses hydrogen into helium in its core. After this stage, the star will evolve off the main sequence and follow a different path, such as becoming a red giant or a supernova.
What is the percentage of gases found within 10 km of earth's surface?
The Earth's atmosphere within 10 km of the surface contains approximately 78% nitrogen, 21% oxygen, and the remaining 1% is made up of trace gases such as argon, carbon dioxide, neon, helium, and methane.
What is a example of an element in science?
Many people feel overwhelmed at tax filing time and many have decided to file online. The Internal Revenue Service, irs.gov, lists several reliable tax service providers on their website where you can research and choose the best provider for your needs. Many offer free filing for both federal and state taxes.
How much helium would it take to lift the weight of the average person?
On average, a person weighs about 70 kg (154 lbs). To lift this weight, it would take approximately 70 cubic meters of helium at standard atmospheric pressure. This is a rough estimate and actual lifting capacity would depend on various factors like inflation pressure and volume.
Why do people live in regions?
People live in plains regions because of its natural sources such as coal, gemstones, cement, clays, limestone, granite, helium, gold, copper, uranium, and oil, etc., and also there is a lot of farming land for people to work as farmers.
What huge clouds of helium and hydrogen serve as a birthplace for stars?
Nebulas.
What percentage of the mass of the solar nebula consisted of elements other than hydrogen and helium?
Roughly 2% of the mass of the solar nebula consisted of elements other than hydrogen and helium. These elements include heavier elements like carbon, oxygen, and iron that were essential for the formation of planets and other celestial bodies.
Jupiter is mostly made up of hydrogen and helium true or false?
True. Jupiter is consisted of mainly hydrogen and helium. 90% hydrogen, 8% helium and 2% other gases
What are two most common elements in nebulas?
The two most common elements found in nebulas are hydrogen and helium. These elements are the building blocks of stars and galaxies, and are formed during the process of stellar nucleosynthesis.
What element made the nebula?
Nebulas are made primarily of hydrogen and helium gas. These elements were present in the early universe and are the building blocks of stars and galaxies. Other elements, such as carbon, oxygen, and nitrogen, may also be present in smaller amounts.
Are nebulas bigger than earth?
Nebulas are interstellar clouds consisting of dust, hydrogen, helium and other ionized gases. Nebulas vary in size, so some are bigger than Earth, and others are not.
Are Nebulas Toxic?
Nebulas in outer space are not toxic as they are vast clouds of dust, hydrogen, helium, and other ionized gases. However, if you are referring to the Nebulas blockchain platform, then it is not inherently toxic either. Like any technology, its use and applications can have positive or negative effects depending on how it is utilized.
Which of these gases is presnet in the greatest percentage in the composition of the sun?
Hydrogen & helium
What is the percentage of hydrogen and heilium in Jupiter's atmosphere?
25 percent helium
What are the gases percentage on Jupiter?
Jupiter's atmosphere is made of 90% hydrogen and 10% helium
What is the concentration of helium on Jupiter?
The concentration, in the atmosphere, is about 10%.
What are the symbols for hydrogen and helium?
The symbol for hydrogen is H, and the symbol for helium is He.
