The reaction of 44.1 g of Cr2O3 with excess Al produced 25.6 g of Cr. What is the percent yield for this reaction?2Al + Cr2O3 → Al2O3 + 2Cr

i'm assuming that the correct answer is indeed the first one/ "a"..

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l