Answer:
4.
A. Proton= Positive charge
B. Neutron= Neutral or no charge
C. Electron= Negative charge
5.
Protons and Neutrons are found in the nucleus.
Hope this helps!
The fact that the unit is supposed to be in percent makes me think it is referring to percent mass. To find percent mass you need to find find the divide the mass of solute by the total mass of solution and than multiply that by 100%.
%mass=(50g/300g)x100%
%mass=0.167%
I hope this helps.
Ultra violet light lemme know when u get it right
Answer:
Permanent hardness (mineral content) is generally difficult to remove by boiling. If this occurs, it is usually caused by the presence of calcium sulfate/calcium chloride and/or magnesium sulfate/magnesium chloride in the water, which do not precipitate out as the temperature increases
Explanation:
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