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What fraction of the mass in the known universe is made up of hydrogen and helium?
Wiki User
∙ 6y ago
By mass, hydrogen = 75%, helium = 23%.
Wiki User
∙ 6y ago
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What is a fraction size?
The size of a fraction, also known as Its magnitude can be thought of as the distance of the fraction from zero on the number line.
What is a Compound fraction?
A compound fraction, also known as a mixed number, is a fraction which comprises a whole part and a fractional part.
What does it mean to reduce a fraction to its lowest terms?
Find the GCF of the numerator and denominator and divide them both by it. If the GCF is 1, the fraction is in its lowest terms, also known as simplest form.
How do you convert a remainder of a division to a fraction?
Put the remainder on top of the divisor and that is the fraction. Remember that a number which divides the other number is known as the divisor. So if we have 4 divided by 2, then 2 is the divisor and 4 is the dividend.
What is the ratio of the unknown amount (x) invested in company A to the known amount (24) invested in company B Write the answer as a fraction.?
It is x/24.
What are the two lightest gases in the universe?
In our known universe, hydrogen then helium. But this may change with further exploration.
What element is the most abundant in the world?
Hydrogen is the most abundant element in the known Universe; helium is second.
What is the most abundant inorganic element in the world?
Hydrogen is the most abundant element in the known Universe; helium is second.
What chemical element is the primary constitutent of a young star?
In the current stage of the Universe, stars start off with lots of hydrogen-1 - and that's what they first fuse, since fusing heavier elements requires higher temperatures.Actually, hydrogen-2 (also known as deuterium) is even easier to fuse, but stars don't have significant amounts of that.
Do hydrogen and helium make the sun?
Yes. Well, actually, it isn't entirely made of hydrogen and helium. It's also made of carbon-based substances and methane gas. The hydrogen burning into helium is what makes the star bright. This is also known as luminosity. Which is how bright something is.
What are huge clouds of helium and hydrogen called?
Vast interstellar clouds of hydrogen are known as "nebula."
Is the sun liqid?
no, it's a constant explosion by gases known as helium, hydrogen. it is a fire, not a liquid.
What is the first member of the noble gases and the second most abundent element in the universe?
Helium is the first member and the most abundent element in the known universe
What is the lightest element in the universe?
Hydrogen. It is the lightest element in the known universe.
Is hydrogen the newest element?
Hardly. Hydrogen is one of the oldest elements known. It also comprises more than 98% of the matter in the entire known universe.
What produces all known element in the universe other hydrogen?
fusion reactions in stars
Where does a star get its energy?
By converting hydrogen to helium using nuclear fusion
