Calculate the number of hydrogen atoms per cubic centimeter for the following matters: (a) fresh water, (b) oil (c, h , 0.8 g/cm3), and (c) methane (ch4, 0.01 g/cm3).

a) 6,69x10²² atoms H/cm³

b) 6,87x10²² atoms H/n·cm³

c) 1,50x10²¹ atoms H/cm³

Explanation:

You can obtain the number of hydrogen atoms per cubic centimeter using density, molar mass and Avogadro's number, thus:

a) ××× = 6,69x10²² atoms H/cm³

b) As oil formula is

××× = 6,87x10²² atoms H/n·cm³ -It depends of n number-

c) ××× = 1,50x10²¹ atoms H/cm³

I hope it helps!

there all right good

explanation: