<span>Convert angstroms to nm for atom diameter
2.18/10=.218 nm. Divide diameter by length width and height.
63.6/.218=292
74.2/.218=327
275/.218=1261
Multiply these to get volume of atoms
120,037,500
Convert atoms to moles using Avogadro number
120,037,500/6.02*10^23=2*10^-16 moles</span>
A (b) would be 42 (c) from x to Y mark me as brainlist thanks
time=distance/speed
1.6/100 secs = 0.016secs=16millisecs