Question

The density of hydrogen is 0.0000899 . g/cm^3
@ganeshie8 help me

Which of the following would be a reasonable estimate of the density of hydrogen?

Answer 1

options ?

Answer 2

yes one sec

Answer 3

a. 9 x 10^-5 g/cm3
b. 8 x 10^-4 g/cm3
c. 9 x 10^-4 g/cm3
d. 8 x 10^-5 g/cm3

Answer 4

@ganeshie8

Answer 5

whats your best guess ?

Answer 6

on this one I honestlyu have no idea I would go with a thoe but I think im so wrong @ganeshie8

Answer 7

looking at the options, looks like we need to move the decimal point to right :

0.0000899

multiply top and bottom by 10^5

Answer 8

you get 8.99/10^5

yes ?

Answer 9

yea

Answer 10

8.99 is close to 9 compared to 8, so you can round it off to 9 :

8.99/10^5 ~ 9/10^5

Answer 11

next send that 10^5 to top and look at the options again

Answer 12

so is it d

Answer 13

8.99/10^5 ~ 9/10^5 = `9 x 10^-5`

Answer 14

it is a