Answer:
A. -205.7 kJ
Step-by-step explanation:
The overall enthalpy of reaction be calculated when the intermediate steps are present
formed in a multi-step process.
Answer:
-6n+20
Step-by-step explanation:
The given term of sequece is 14, 8, 2, -4, …,
Here the first term is 14 and then the terms are decreasing by 6 each time because 
As we know that the nth term of the sequence is given by the formula

If n is a term of the given sequence sequence, then its value is -6n+20
Answer:
Some of the products do not show the correct powers of x.
Step-by-step explanation:
From the picture,
3x(2x - 1) = 6x² - 3x
The correct display on the tile should look like this :
_____+x ______ +x ______ +x
+x __ +x² ______+x² ______+x²
|
+x__ +x² ______ +x² ______+x²
|
- ___ -x _______ -x _______-x
+6x² - 3x