The pure substance of water mixes with the waste. The waste does not dissolve into the water, therefore it is a mixture.
Fluorine, chlorine, iodine (the halogens), oxygen, sulphur, hydrogen
2.70x10^23 molecules F2 x__1 mol F2____________ x38gF2__
6.02x10^23 mc F2 1mol F2
then solve
To do this, you 1st figure out the atomic number of which ever element you are working on. In this case, it's Nitrogen. Nitrogen has an atomic number of 7. So basically, you right N with 2 dots on top of it, 2 dots to the right, 2 dots below N and 1 dot to the left of N.
The amount of W : = 1.22 x 10²⁰
<h3>Further explanation</h3>
Given
5.6 mg of a micro computer
Required
The amount of chip
Solution
A mole is a number of particles(atoms, molecules, ions) in a substance
1 mole = 6.02.10²³ particles
Can be formulated :
N = n x No
N = number of particles
n = mol
No = 6.02.10²³ = Avogadro's number
mass = 5.68 mg = 5.68 x 10⁻³ g
mol :
= mass : MW
= 5.68 x 10⁻³ g : 28 g/mol
= 2.03 x 10⁻⁴
The number of atoms :
= 2.03 x 10⁻⁴ x 6.02.10²³
= 1.22 x 10²⁰