Answer:
7.71x10^23 molecules
Explanation:
Avogadro's # = 6.022x10^23
1.28 mol SiO2 x 6.022x10^23/ 1 mol SiO2 = 7.71x10^23 molecules
Answer:
national
Explanation:
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Answer:
13
Explanation:
atomic molar mass of 27 grams per mole. Al has 13 protons (hence number 13) and it most common ...
The answer is 72973739373