Answer:
2
Explanation:
In calcium oxide, the calcium is electropositive in nature and to fulfil its octet, the calcium atoms lose two electrons to form the calcium cations whose valency is 2, hence the corresponding anion, i.e. the oxide anion must also have valency 2 to balance the positive charge on the calcium cation.
Hope this helps... 0_0
The masses of solute in the 2 solutions can be different but result in the same concentration, this is best explained with examples.
Say solution A contained 10g of solute and had a volume of 100dm^3
If solution B contained 5g of solute and had a volume of 50dm^3 this would make the concentrations of A and B identical.
Answer:
a substance that can dissolve other molecules and compounds, which are known as solutesBecause of its ability to form hydrogen bonds, , meaning that it can dissolve many different kinds of molecules.
Explanation:
Is there suppose to be a diagram attached to this?
Answer: A.Light travels in a straight line., B.Light behaves in a predictable way. , D.Light curves around corners or obstructions
-Hope this helps<3
