Answer:
The number of Aluminium atoms present in per cubic meter is 
Explanation:
Given the density of Aluminium 
is 
And the atomic weight of Aluminium 
is 
Also, the Avogadro's number 
is 
We need to find the number of atoms per cubic meter 
Plug the given values in the formula we get,
So, the number of Aluminium atoms present in per cubic meter is 
Both sides need to be balanced?
In order to obtain solid NaCl, the student should do a few steps.
First, he/she should do filtration. Pass the mixture through a filter paper, where all the sand should be filtered out already because they're not dissolved in the solution plus they're too small to pass through the filter paper.
Next, the filtrate should be left with NaCl (aqueous state). To seperate NaCl with the liquid, the student can either do evaporation or crystallization, depending on how pure or fast he/she wants the results to be. Evaporation involves heating the beaker or whatever apparatus under the bunsen burner until all the liquid has evaporated. Then, some white powder should be left, they're NaCl solid. For crystallization, the student should just put the beaker on a room condition environment, and wait. They might have to wait a month or so for the liquid to completely evaporate itself and left with clear and pure NaCl crystals.
Answer:
2 moles
Explanation:
For a mole NaCi, we have a mole of sodium ion and a mole of chloride.
Answer:
C: salt is dissolved into freshwater
D: salt is dissolved into freshwater
F: frying changes the color and texture of an egg
G: ocean water evaporates to water vapor on a hot day
