Question

Many chemisty conferences have held a 50- Trillion Angstrom Run (two significant figures). How long is this run in kilometers and in miles? (1 A = 1 x 10-10m)

Answer 1

The run is 5.0 km or 3.1 mile long

Step-by-step explanation:

1 trillion =
`10^(12)`

So, 50 trillion =
`50* 10^(12)`

`1\AA =1* 10^(-10)m`

So,
`50trillion\AA =50* 10^(12)* 1* 10^(-10)m=50* 10^(2)m`

`1m=10^(-3)km`

So,
`50trillion\AA =50* 10^(2)* 1* 10^(-3)km=5.0km`

`1km=0.621mile`

So,
`50trillion\AA =5.0* 0.621mile=3.1mile`