Question

How many 1140 nm long molecules would you have to line up end to end to stretch a distance of 158 miles?

Answer 1

221754385964.9123

Step-by-step explanation:

Convert miles to nanometer

1 mile = 1.6 km

1 km = 1×10³×10³×10³×10³ nm

1 mile = 1.6×10¹² nm

So,

158 miles = 158×1.6×10¹² = 252.8×10¹² nm

Length of each molecule = 1140 nm

Number of molecules = Total length / Length of each molecule

`\text{Number of molecules}=(252.8* 10^(12))/(1140)\\\Rightarrow \text{Number of molecules}=221754385964.9123`

There are 221754385964.9123 number of molecules in a stretch of 158 miles