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Why does an old main sequence star have more helium than a young main sequence star?
Stars convert hydrogen into helium over time.However, please note that they do so at very different rates; a massive star burns its fuel (hydrogen) much faster than a less massive star - so you can well have a massive star, which is only a few million years old, but which already burnt much of its fuel.
What happens to a sun like like star after it has used up all its core fuel?
Once a sun-like star has used up almost all of the hydrogen in it's core it will start to burn helium as well. This starts it's Red Giant phase which drastically increases the size of the star to hundreds of it's original size. Once the star has used up all available fuel it will contract down to the size of the Earth. While shedding it's outer layers into a Nebula. The Star is now a White Dwarf and will slowly fade into a Black Dwarf after trillions of years.
What are the names of the elements used to create the light in a star?
Stars use nuclear fusion of hydrogen to helium to create the energy they emit.
What is the Advantage of the presence of hydrogen in large scale in the sun?
A star, like the sun, spends much of its life producing energy, in the form of light and heat, through the fusion of hydrogen into helium. When the hydrogen is mostly used up the star moves to fusion of helium into larger (heavier) elements. At that stage the sun will become a red giant. It will then be large enough to engulf the earth's orbit, thyough well before that happens, the earth will be a burnt, lifeless "cinder".
A large bright star whose hot core has used most of its hydrogen is a?
Red giant. The word "most" in the question isn't quite accurate. There is still a lot of hydrogen remaining in a star when the amount of helium becomes a problem. Hydrogen in the star is fused into helium, and the helium is at least roughly analogous to the ash in a wood fire; it is what's left over from the hydrogen fusion, and too much gets in the way. When the proportion of helium gets too high - above about 50% is enough - the helium begins to interfere with the hydrogen fusion process. Without enough new heat generated by fusion, the star begins to collapse under the influence of gravity. The compression increases the temperature, and when the pressure and temperature gets high enough, the helium "ash" in the core becomes helium "fuel" for the Red Giant phase.
Why does an old main sequence star have more helium than a young main sequence star?
Stars convert hydrogen into helium over time.However, please note that they do so at very different rates; a massive star burns its fuel (hydrogen) much faster than a less massive star - so you can well have a massive star, which is only a few million years old, but which already burnt much of its fuel.
What happens when you put neon gas and helium gas together?
Nothing. Helium and CO2 are non reactive with each other. Helium is a noble gas and not reactive at all. This mixture is used as a welding shield to minimize slag, and if oxygen is also included it is used as a deep diving air mix.
Has helium ever been used in blimps?
Yes, helium has been used in blimps as a lifting gas. Helium is less dense than air, which allows it to provide buoyancy and help the blimps stay afloat. However, today, most blimps use a combination of helium for lift and air for control and propulsion.
A star is comprised mostly of what two elements?
H Hydrogen which is the lightest element that is highly flammable element and He Helium the second lightest element with no fire risk. This is why helium is used in making balloons than hydrogen which is much lighter than helium.
What gases have commonly been used in balloons that carry passengers?
Hydrogen, Helium
What happens to a star when it has used up all its fuel?
It collapses.
Is helium used in medicine?
No, helium is not used in medicine.
Is helium used in car tires?
My new Chevy Equinox came from the dealer with helium filled tires. Since this cost money,what happens on a trip if they leak and I need to add air?
How or in what is helium used?
either for balloons, or whip it's.
What happens to a sun like like star after it has used up all its core fuel?
Once a sun-like star has used up almost all of the hydrogen in it's core it will start to burn helium as well. This starts it's Red Giant phase which drastically increases the size of the star to hundreds of it's original size. Once the star has used up all available fuel it will contract down to the size of the Earth. While shedding it's outer layers into a Nebula. The Star is now a White Dwarf and will slowly fade into a Black Dwarf after trillions of years.
What are the names of the elements used to create the light in a star?
Stars use nuclear fusion of hydrogen to helium to create the energy they emit.
How useful is helium?
How Helium is used: It is used to blow up balloons.
