Question

2.24 nm in scientific notation

Answer 1

Scientific notation simply refers to the number of trailing zeroes.

You measurement is in "nm", nano referring to .000000001 m (9th place after decimal)

So, to write in scientific notation, we use the number we're given: 2.24
We multiply by a power of 10: x 10 ^
And the power is the number of places up and including the first non-zero value: 9
And the power is negative, because the zeroes are after a decimal.

Therefore: 2.24 nm = 2.24 x 10^-9

Answer 2

2.24 nm = 2.24 x 10^-9