The wavelength of red light is approximately 750 nm. How many meters would this be? 18. The total air that your lungs can hold is approximately 6,000. cm3 . Wh

Question

use the correct numbers of significant figures

Answer 1

You need to know conversion factors, such as 1 nm = 10^-9 meters or 10⁹ nm = 1 m.  Thus,

750 nm x 1 meter/1x10⁹ nm = 750x10^-9 meters = 7.5x10^-7 meters (2 significant figures).

 

The second part of your question was cut off.