Grease and non-polar too, so the <span>tetrachloroethylene would be a solvent.</span>
Answer:
You need to have a clean surface for contact between the solution and the material.
Explanation:
The presence of impurity on the surface of the material, and lack of surface uniformity (smoothness) can reduce the effective contact between material and solution and can interfere with the electroplating process's success.
The concentration in weight percent when 6 g of sugar is mixed with 9 g of water is 40%.
There are several ways to denote the concentration of a solution like
- Molarity
- Molality
- Mass percent
- Mole Fraction
The formula for calculating mass percent is as follows
Mass per cent = (Mass of solute/Mass of solute + Mass of solvent) x 100%
In the given situation sugar is the solute and water is the solvent.
Putting the given values in the above formula
Mass per cent = (6/6+9) x 100%= 6/15 x 100% = 40%
Hence, the concentration in weight percent when 6 g of sugar is mixed with 9 g of water is 40%.
To know more about "concentration of a solution", refer to the link given below:
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I believe that carbonic acid breaks down into carbon dioxide and water when under decomposition.
The answer should be CO2 and H2O
Density=mass/volume. Put the mass (2790g) over the volume (205mL)
Density= 2790g/205mL
Your answer should be in g/mL.
Hope this helped! :)
