A grain of sand weighs approximately 0.0102 grams. How many molecules of SiO2 are in a grain of sand? Assume that sand is 100% SiO2.

asked Sep 17, 2023 204k views

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mol = mass : MM SiO₂

mol = 0.0102 : 60 g/mol = 0.00017

molecules = 0.00017 x 6.02 x 10²³ = 1.0234 x 10²⁰

Mmutilva answered Sep 18, 2023

5.7k points

11 votes

Answer:

0.5

Step-by-step explanation:

MeTitus answered Sep 23, 2023

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