Answer:
the time required for one half of a sample of a radioisotope to decay
Answer this: 15/x = 23/3 and this: 30/x = 90/3
2 answers:
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Answer:
There are 8Si atoms and 16 O atoms per unit cell
Explanation:
From the question we are told that:
Edge length
Density
Generally the equation for Volume is mathematically given by
Where
Molar mass of (SiO2) for one formula unit
Therefore
Density of Si per unit length is
Molar mass of (SiO2) for one formula unit
Therefore
There are 8Si atoms and 16 O atoms per unit cell