First, we have to see how K2O behaves when it is dissolved in water:
K2O + H20 = 2 KOH
According to reaction K2O has base properties, so it forms a hydroxide in water.
For the reaction next relation follows:
c(KOH) : c(K2O) = 1 : 2
So,
c(KOH)= 2 x c(K2O)= 2 x 0.005 = 0.01 M = c(OH⁻)
Now we can calculate pH:
pOH= -log c(OH⁻) = -log 0.01 = 2
pH= 14-2 = 12
Answer: It is made up of one element
<u>Answers</u>:-
1) Al (Aluminium)
2) C-13 (Carbon-13; an isotope of carbon)
3) let me guess
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The physical characteristics ofminerals include traits which are used to identify and describe mineralspecies. These traits include color, streak, luster, density, hardness, cleavage, fracture, tenacity, and crystal habit.