Answer:
Explanation:
We know the area of the rectangle is length * width
We also know width = length - 5
Thus area is 
Answer:
Central government is made up of executive,legislature and judiciary.
1 mol KMnO₄ contains 4 mol O, which has a molar mass of about 15.999 g/mol. Then the mass of O in the sample is
(4 mol) (15.999 g/mol) ≈ 63.996 g