Answer:
1.) The balanced equation is 3MgO(s) + 2Fe(s) ===> Fe2O3(s) + 3Mg(s)
2.) 20g of Fe2O3 will be produced by 20 ×120/160 = 15g of MgO
Explanation:
THE CORRECT EQUATION IS: MgO(s) + ___ Fe(s) ===> Fe2O3(s) + ___ Mg(s)
The balanced equation is: 3MgO(s) + 2Fe(s) ===> Fe2O3(s) + 3Mg(s)
molar mass of 3MgO = 3(24 + 16) = 120
Molar mass of Fe2O3 = 2 X 56 + 3 X 16
=112 +48 =160
From the equation, 120g of MgO Produced 160g of Fe2O3
Therefore 20g of Fe2O3 will be produced by 20 ×120/160 = 15g of MgO.
C
The battery is chemical energy. When it is used in the flashlight, it produces light and thermal energy
PLZ MARK BRAINLIEST :)
The rules for naming an organic compound regarding punctuation are
a) a comma is put in between two digits (or numbers)
b) a digit and a letter are separated by a hyphan
Example:
3-ethyl-2-methylhexane
2,3,3-trimethylhexane
