Sadaalcala1
15.12.2020 •
Chemistry
⚠️PLS HELP I HAVE ZERO CLUE AND NEED HELP ASAP DUE AT 12 WILL GOVE BRAINLIEST THANK U⚠️
1/4th of a sample of thorium-232 remains.
How long has the sample been decaying?
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Ответ:
= 3.01 x 10²³ atoms of gold (Au)
Explanation:
1 mole of any substance => 1 Avogadro's Number of particles = 6.02 x 10²³ particles.
∴ for 5 moles of gold atoms => 5 moles x 6.02 x 10²³ atoms/mole
= 3.01 x 10²³ atoms of gold (Au)