Aratio wave travels 186,000 miles per second. how many kilometers will the wave travel in one microsecond? (1 mile=1.61 km)

A radio wave travels 186000 miles per second. 1 mile is equivalent to 1.61 km. 186000 miles is equivalent to 186000*1.61 = 299460 km.

The radio wave travels 299460 km per second. It travels 299460*10^-6 = 0.299460 km in one microsecond.

A radio wave travels 0.299460 km in one microsecond.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.