Will mark brainliest iron chloride (fecl3) and potassium oxide (koh) react in a double displacement reaction. • what will the products of the reaction be? explain how you did this. • does this represent a chemical change or a physical change? explain how you came to your answer.

( A) The product  of double displacement reaction  between feCl3 and KOH is

KCl  and Fe(OH)3

   explanation

A double displacement    between FeCl3  and KOH reaction occurs to form KCl  and Fe(OH)3  according to below equation.

3KOH + FeCl3→   3KCl  + Fe(OH)3

Since K  is  high reactive than Fe ,K  replaces Fe   from it's compound  to form KCl  while Fe take OH to form F(OH)3

(B) The  type of  chemical change  represented is   a chemical change

This  is  because  double displacement reaction result in formation of new  products.

3

explanation:

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.