Question

1. how many nanometers are there in 321 micrometers?

Explanation:

Step1: Recall the conversion factor

1 micrometer ($\mu m$) = 1000 nanometers ($nm$).

Step2: Set up the conversion

To find the number of nanometers in 321 micrometers, we multiply 321 by the conversion factor. Let $x$ be the number of nanometers. Then $x = 321\times1000$.

Step3: Calculate the result

$x=321\times1000 = 321000$

Answer:

321000