Osmosis through a semipermeable membrane
I hope this helps you
:)
<u>Answer:</u>
The very early discovery of particles that were subatomic was proposed by Dalton, which was then negated by the postulates suggested by Thomson that proved Dalton's theory.
<u>Explanation:</u>
The structural arrangement of atoms were approved by Thomson and Rutherford using the technique of air condition in x-ray showing the arrangement of protons and neutrons within Centre.
A nucleus and the negative particles that we called electrons moving around which were also shown to be much lighter than the particles present in the centre.
In science, physical quantities like length, weights etc are measured in units of metric or International System of units.
Some importance units are as follows:
1. Meter (m) for length.
2. Liter (L) for volume.
3. Gram (g) and kilogram (kg) for mass.
4. Degree Celsius (oC) for temperature.
5. Second for (s) time.
Given that the length of an object = 45.2 cm
SI unit of length is m
100 cm = 1.0 m
Therefore
45.2 cm * 1 .0 m/100 cm
= 0.452 m
First Magnetic Separation to remove the iron fillings.
Next Dissolution of the sand and salt in water, and Filtration to separate the salt solution from the sand.
Evaporation of the salt solution to get back the salt.
Assume you have 1 L of the material (you can assume any volume you want, you'll get the same answer).
<span>Using the density, the one L has a mass of 1114 g </span>
<span>20% by mass of phosphoric acid means the mass of phosphoric acid is 0.20 * 1114 g </span>
<span>Calculate the moles of phosphoric acid </span>
<span>Molarity, M, mole / L = moles of acid / volume or 1 L</span>
