Answer:
when chemical bonds between atoms are formed or broken
The answer is a Nucleus. Eukaryotic cells have nuclei while;e prokaryotic cells do not.
<span>Wrap a magnet in plastic lunch wrap and move it through the mixture of the three solids. The iron filings will stick to the magnet. The filings can be removed by unwrapping the plastic from the magnet carefully! Mix the remaining salt and sand in water and stir.</span>
Answer:
Explanation:
We have to remember the <u>molarity equation</u>:
So, we have to calculate "mol" and "L". The total volume is 100 mL. So, we can do the <u>conversion</u>:
Now we can calculate the moles. For this we have to calculate the <u>molar mass</u>:
O: 16 g/mol
H: 1 g/mol
C: 12 g/mol
With the molar mass value we can <u>calculate the number of moles</u>:
Finally, we can <u>calculate the molarity</u>:
I hope it helps!
Answer:
The moles of solute
Explanation:
When you make a dilution, moles of solute does not change when you add solvent.
In concentrated solution, you have x moles of solute, that will be the same in the diluted solution.
Relation between molarity or volume of concentrated and diluted solutions is called, "dilution factor".
When you calculate the dilution factor: you use this formula
Molarity concentrated . Concentrated volume = M diluted . Diluted volume
M concentrated / M Diluted = Diluted volume / Concentrated volume
