Answer:
-20.1 degrees Celsius
Step-by-step explanation:
The system started at -12.6 Celsius. It then cooled 7.5 degrees during a reaction. Because it cooled, that means the difference is negative.
-12.6 degrees Celsius - 7.5 degrees Celsius = -20.1 degrees Celsius
It is important to always remember your correct names and variables for numbers in chemistry!
Step-by-step explanation:

hope this helpful
Answer:
9x² - 4/3x + ¼
Step-by-step explanation:
(3x - ½)²
(3x - ½)(3x -½)
9x² - ⅔x - ⅔x + ¼
9x² - 4/3x + ¼
Answer:
1 bar= 6.25 %
4 bar= ?...............(Criss cross)
x = 6.25% x 4 bar/1 bar
x = 25%
Answer:
answer is D
Step-by-step explanation:
12+1/2=12.5 12+2/5=12.4