How much hydrogen converted to helium in sun?

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  • Member since
    May, 2005
How much hydrogen converted to helium in sun?
Posted by Anonymous on Friday, September 19, 2008 5:38 AM

Assuming the only energy source is the repeated fusion of four Hydrogen atoms into one Helium atom, What will be the mass of Hydrogen converted into Helium by the Sun in its lifetime (10 billion years)?
Mass of one Hydrogen atom: 1.673×10^(−27) kg

Thanks

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  • From: Texas
Posted by chipdatajeffB on Saturday, September 20, 2008 12:02 PM

We try not to do people's homework for them here.

Sounds like a trip to Wikipedia is in order ... many astronomy textbooks also talk about this. When in doubt, Google it out.

Sorry ...

The universe is not only stranger than we imagine, it's stranger than we CAN imagine. --- JBS Haldane

Come visit me at Comanche Springs Astronomy Campus (we're on Google Maps) in Texas.

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  • Member since
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Posted by Anonymous on Saturday, September 20, 2008 12:21 PM

I have tried google and couldnt find anything of help thast why am here, otherwise i wouldnt even be here.

 I have found out how much Mass it losses in 10 billion years which is (using E = mc^2) 1.35*1027 kg , but am not sure how to find how much Hydrogen is lost.

I have started off like this:
Mass of Hydrogen atom = 1.673*10-27 kg, lifespan of sun = 10 billion years. 4 Hydrogen atoms per Helium so 1.673*10-27 * 4 = 6.692*10-27 kg lost each time the Hydrogen fuses.

But i dont know how to find how many fuse per second.

 

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  • Member since
    July, 2002
  • From: Texas
Posted by chipdatajeffB on Saturday, September 20, 2008 12:41 PM

Try the phrase: "rate of solar hydrogen fusion".

This link should help (click here).

The universe is not only stranger than we imagine, it's stranger than we CAN imagine. --- JBS Haldane

Come visit me at Comanche Springs Astronomy Campus (we're on Google Maps) in Texas.

www.3rf.org

  • Member since
    May, 2005
Posted by Anonymous on Saturday, September 20, 2008 2:55 PM

yeah i have tried reading that but i cant seem to link it to what i want to find out.

  • Member since
    July, 2003
  • From: Eastern SD.
Posted by johnjohnson on Saturday, September 20, 2008 8:15 PM

That is going to be hard to be accurate on as the sun has not burned at a continuous rate, nor will it burn at a continuous rate in the future. Currently it about 3.6 X 10 to the 38th protons of Hydrogen converted to Helium every second for a matter to energy conversion rate of 4.3 million metric tons a second.

JJ 

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