The challenges of size

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Question 5
Easy

A synthetic chemist designs a spherical catalyst nanoparticle for use in green hydrogen production. The nanoparticle has a surface area of 1.8 × 10-7 mm2 and a volume of 4.5 × 10-11 mm3.

What is the surface area to volume ratio of this nanoparticle?

400:1400 : 1400:1

4000:14000 : 14000:1

0.00025:10.00025 : 10.00025:1

40:140 : 140:1

The challenges of size Questions

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