how much hydrogen fuses into helium every second

How Much Hydrogen Fuses Into Helium Every Second?

It fuses about 600 million tons of hydrogen every second, yielding 596 million tons of helium. The remaining four million tons of hydrogen are converted to energy, which makes the Sun shine.

How many hydrogens must fuse to form helium?

The reaction that happens in the sun fuses two Hydrogen atoms together to produce Helium. It looks like this in a very simplified way: H + H → He + ENERGY.

How much hydrogen is converted into helium each second in the Sun give your answer in kg with three significant digits?

The Sun fuses 600 billion kg (that is 600 x 109 kg) of hydrogen every second.

How much energy is released when hydrogen fuses into helium?

A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about 3.6 × 1011 kJ of energy per mole of He42 produced.

Can you fuse hydrogen and helium?

This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.

How much energy is released when two hydrogens fuse?

hydrogen + hydrogen + hydrogen + hydrogen = helium + energy So every time you fuse 4 hydrogen atoms together to make helium, 26.7 MeV is released.

Does 2 hydrogen make helium?

WHAT IS FUSION? Fusion is the process that powers the sun and the stars. It is the reaction in which two atoms of hydrogen combine together, or fuse, to form an atom of helium. In the process some of the mass of the hydrogen is converted into energy.

How much energy is produced when the Sun converts 1 kg of hydrogen into helium?

Fusing one kilogram of hydrogen into helium releases 630 trillion joules of energy.

What happens when 2 helium atoms fuse?

Two helium-3 nuclei fuse together, producing helium-4, two protons (hydrogen-1), and energy, Helium-3 fuses with helium-4, producing beryllium-7, which decays and then fuses with another proton (hydrogen-1) to yield two helium-4 nuclei plus energy.

How much energy is 17.6 MeV?

Each D-T fusion event releases 17.6 MeV (2.8 x 1012 joule, compared with 200 MeV for a U-235 fission and 3-4 MeV for D-D fusion). On a mass basis, the D-T fusion reaction releases over four times as much energy as uranium fission.

How does hydrogen fuse to helium?

The Sun’s gravitational force confines the positively-charged hydrogen nuclei and work with the high temperatures that cause the nuclei to move around furiously, collide at high speeds overcoming the natural electrostatic repulsion that exists between the positive charges and fuse to form the heavier helium.

How much helium does fusion produce?

The Sun is a main-sequence star, and, as such, generates its energy by nuclear fusion of hydrogen nuclei into helium. In its core, the Sun fuses 620 million metric tons of hydrogen and makes 616 million metric tons of helium each second.

Do all stars fuse hydrogen into helium?

Main sequence stars fuse hydrogen atoms to form helium atoms in their cores. About 90 percent of the stars in the universe, including the sun, are main sequence stars. … Smaller bodies — with less than 0.08 the sun’s mass — cannot reach the stage of nuclear fusion at their core.

Can helium be made from hydrogen?

Helium is the second lightest and second most abundant element in the observable universe (hydrogen is the lightest and most abundant). … Large amounts of new helium are being created by nuclear fusion of hydrogen in stars.

When helium atoms fuse helium will be converted to?

When the temperature in the core reaches about 100 million degrees, the helium will begin to fuse into carbon by a reaction known as the triple-alpha process, because it converts three helium nuclei into one carbon atom. This generates a great deal of heat.

Does fusion produce radiation?

Does Fusion produce radioactive nuclear waste the same way fission does? Nuclear fission power plants have the disadvantage of generating unstable nuclei; some of these are radioactive for millions of years. Fusion on the other hand does not create any long-lived radioactive nuclear waste.

Why does it take 4 hydrogen atoms to make helium?

Hydrogen and helium are trapped at the center of the Sun, and the immensity of the Sun’s gravity forces four hydrogen atoms to fuse together into one helium atom and release the energy that keeps the Sun burning and our skin tanned.

How much energy in joules is produced when 4 hydrogen nuclei fuse into 1 helium nucleus?

A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about 3.6 × 1011 kJ of energy per mole of He42 produced.

What is made after helium He 3 or he 4?

stable isotopes of helium are helium-3 (or 3He), with two protons and one neutron, and helium-4 (or 4He), with two protons and two neutrons. He forms the bulk of naturally occurring helium, but the lighter isotope 3He has been formed, since about 1950, in experimentally useful quantities by the decay…

What is a fusion reactor made of?

Overall, a D-T fusion reactor uses deuterium and lithium as fuel and generates helium as a reaction by-product. Deuterium can be readily obtained from seawater—about one in every 3,000 water molecules contains a deuterium atom. Lithium is also abundant and inexpensive.

Can you split helium?

Helium atoms don’t need as much energy to hold them together. … We can split one atom into two smaller atoms. This is called fission. The two smaller atoms don’t need all the energy that held the larger atom together.

How much of the sun is hydrogen?

The sun is a big ball of gas and plasma. Most of the gas — 92% — is hydrogen.

Abundance of elements.

Element Abundance (pct. of total number of atoms) Abundance (pct. of total mass)
Hydrogen 91.2 71.0
Helium 8.7 27.1
Oxygen 0.078 0.97
Carbon 0.043 0.40

What percentage of the hydrogen in the core of the Sun is fused into helium and what percentage is turned into energy?

The amount of mass available in the Sun to be used as “fuel” is the mass in the core of the Sun, which is approximately 10% of its mass. (The mass of the Sun is 2 x 1030 kg.) Recall that, each time four hydrogen nuclei fuse into a helium nucleus, 0.7% of the mass of hydrogen is converted into energy (where E = mc2).

Will the Sun last forever?

The Sun is about 4.6 billion years old – gauged on the age of other objects in the Solar System that formed around the same time. Based on observations of other stars, astronomers predict it will reach the end of its life in about another 10 billion years.

How long in total will the Sun shine powered by nuclear fusion?

– The Sun would shine for about 15 trillion years on mass energy! How can the mass be converted into energy? – Nuclear reaction – Nuclear reaction in the Sun can convert ~0.07% of the mass into energy. This is 0.7% of the original mass of four protons.

What element is created when 2 helium atoms fuse together?

Stars create new elements in their cores by squeezing elements together in a process called nuclear fusion. First, stars fuse hydrogen atoms into helium. Helium atoms then fuse to create beryllium, and so on, until fusion in the star’s core has created every element up to iron.

What happens when most of the hydrogen in the core is fused in helium in the stellar core?

Once a star has converted all the hydrogen in its core into helium, the core is no longer able to support itself and begins to collapse. It heats up and becomes hot enough for hydrogen in a shell outside the core to start fusion. … Eventually, the core becomes degenerate and the star expands onto the red giant branch.

What element is created by fusing two helium atoms together?

Nuclear fusion reaction of two helium-4 nuclei produces beryllium-8, which is highly unstable, and decays back into smaller nuclei with a half-life of 8.19×1017 s, unless within that time a third alpha particle fuses with the beryllium-8 nucleus to produce an excited resonance state of carbon-12, called the Hoyle …

How was fusion discovered?

Rutherford understood what tremendous forces could be unleashed from the atom nucleus. In a famous 1934 experiment that opened the way to present-day fusion research (including ITER), he realized the fusion of deuterium (a heavy isotope of hydrogen) into helium, observing that “an enormous effect was produced.”

How much energy does the tokamak produce?

The world record fusion power output of 16 megawatts was achieved in the JET tokamak in England in 1997. The ITER central solenoid will be the largest superconducting magnet ever built. It will produce a field of 13 tesla, equivalent to 280,000 times the Earth’s magnetic field.

What is the binding energy of a deuteron?

The measured binding energy of the deuteron is 2.2 MeV. But the mass of the deuteron is 1875.6 MeV, implying that, upon energy grounds, it is stable agains such a decay. The free neutron yields an energy of 0.78 MeV in beta decay, but the 2.2 MeV binding energy of the deuteron prevents its decay.

What triggers nuclear fusion in stars?

Fusion: The energy source of stars. The energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. When the core is hot enough, nuclear fusion commences. Fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

What are the 3 steps of nuclear fusion?

The steps are:


how much hydrogen fuses into helium every second



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