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agasfer [191]
3 years ago
13

How many atoms are in a grain of sand??

Biology
2 answers:
Naily [24]3 years ago
8 0
Avogadro tells us that we have 6.023 x 10^23 SiO2 units per gram, so there would be 6.023 x 10^23 / 60 ≈ 1 x 10^22 SiO2 units in a gram of pure SiO2, and with SiO2 composed of 3 atoms<span>, that puts us at </span>3<span> x 10^22 atoms per gram of SiO2. Now, a grain of sand does not weigh 1 gram. It weighs less</span>
34kurt3 years ago
5 0
5 x 10^19 atoms in standard expression. hope this helps
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