long term consequence, not many can come back from it
Answer:
The correct answer would be - 13.0975 ounces.
Explanation:
We know that brass is made up of zinc and copper. The copper part of the brass is approximately around 50 to 70% and the remaining is the zinc part.
Given:
Zinc percentage in a brass = 35%
copper percentage would be - 65% (100 - 35 = 65)
Weight of the brass metal bar = 20.15 ounce
ounces of copper are in the bar = ?
Solution:
The weight of the copper in the brass metal in ounces-
= weight of brass* percentage of copper/100
= 20.15*65/100
= 13.0975 ounces of copper.
2nd method =
The weight of the zinc in the brass metal in ounces-
= weight of brass* percentage of zinc/100
= 20.15*35/100
= 7.0525
The weight of the copper = total weight - weight of zinc
= 13.0975 ounces of copper.
Answer:
31.3 kJ/mol is the free energy, ΔG, for the overall reaction, A⇌D.
Explanation:
A⇌B, 
= 11.9 kJ/mol ...[1]
B⇌C, 
= -26.7 kJ/mol ...[2]
C⇌D, 
= 7.30 kJ/mol ...[3]
A⇌D, 
= ?...[4]
[4] = [1] - [2] - [3] (Using Hess's law)
31.3 kJ/mol is the free energy, ΔG, for the overall reaction, A⇌D.
2h-7 I had that before unless I’m tripping but I did rechecked
