Question

A hydrogen atom is about 0.1 nm in diameter. How many hydrong atoms lined up side by side would make a line 1 cm long?

Answer 1

the answer is 1.1nm dude by side

Answer 2

100 million hydrogen atoms.

Step-by-step explanation:

To find the number of hydrogen atoms lined side by side that would make the line 1 cm long, we divide the total length i.e 1 cm by the size of each hydrogen atom i.e 0.1 nm.

First we convert all given values to meter

`1 cm = 0.01 m`

`0.1 nm = 1X10^(-10) m`

Now we can divide the converted values

No of hydrogen atoms =
`(0.01)/(1X10^(-10) )`

= 100,000,000 =
`1 X 10^(10) hydrogen-atoms`

i.e 100 million hydrogen atoms of diameter 0.1 nm would be lined side by side to make a line 1 cm long.