Answer:
Step-by-step explanation:
You will need to know the gram weight per mole from the periodic table for the element ( or the molecule of elements) in question.
Answer:
Step-by-step explanation:
(6×4)+(3×7)
______________
7×4
= 45/28 or 1 17/28
Answer:
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
I did my method that I was taught but if you do (-5) - (-2), you get 3. So you subtract 39 by the -21 to get 18.