High School How Do You Calculate the Total Mass in Kilograms from Atomic Mass Units?

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To calculate the total mass in kilograms from atomic mass units (amu), multiply the number of atoms by the mass of one atom in kilograms. For a helium atom with a mass of 4.0 amu, convert it to kilograms using the conversion factor of 1 amu = 1.66053904 x 10^-27 kg. Thus, the mass of one helium atom is 4.0 x 1.66053904 x 10^-27 kg. Multiply this result by 6.0 x 10^24 atoms to find the total mass in kilograms. The final calculation provides the total mass of the helium atoms in kilograms.
Nick Jarvis
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I have a complete brain freeze sorry, and cannot work this out.

I have a helium atom of 4.0 amu and there are 6.0 x 10^24 atoms. How do I calculate the total mass in kg please?

Thanks
 
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1 amu = 1.66053904 x 10-27 kg
 
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Thanks Dr.
 

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