<span>Among important crop plants, nitrogen-fixing root nodules are most commonly an attribute of
B) legumes</span>
Of heating. Or when the lake is exposed to boil because of the temperature.
Answer:
9.28
Explanation:
pOH refers to a measure of hydroxide ions concentration. pOH tells about the alkalinity of a solution. If pOH is less than 7 then aqueous solutions are alkaline, acidic if pOH is greater than 7 and neutral if pOH is equal to 7.
Concentration of the hydroxide ions = 1.9 x 10-5 M
pH = 
pOH = 14 - pH
=14 - 4.72 = 9.28
CO2, C2H2, BeF2, XeF2, etc all these molecules have linear geometry.