What is the mass of one proton

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Reference no: EM132582978

Avogadro's Number is the number of protons needed to make 1kg of matter. If you manage to collect 6.022 * 10^23 protons (602,200,000,000,000,000,000,000 protons... you can see how using scientific notation for a freakish number like this is much easier!) then you now have 1kg of mass.

1) Now, since we know it takes 6.022*10^23 protons to make 1kg I want you to tell me how many protons there are in the known universe using this data:

our star is: 1.989*10^30 kg

our galaxy is: 2*10^11 suns in mass

there are: 2.5*10^11 galaxies in the universe.

So, how many protons must there be in the Universe?

2) If there are 6.022*10^23 protons in 1 kg of mass, and there are 10^3 grams in a kilogram, what is the mass of one proton? (remember, scientific notation can be used to represent really small numbers too!)

Reference no: EM132582978

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