Answer:
No. Of Moles of zinc = m/Ar
= 13/ 65.38 = 0.198 moles
From balanced equation, Mole ration between CuSO4 and Zn is 1 : 1
So only 0.198 moles of CuSO4 reacts, it is in excess
Mass = no of Moles X Mr
Mass = 0.198 X 159.5 = 31.59 grams
Volume = mass m denisty
Volume j 31.59 / 3.6 = 8.78 ml
Explanation:
i think this wrong
Answer:
D
Explanation:
I may need a photo but D seemed the most logical
The carbon atoms have no double bonds between them.
A. there will be less pollution.
b. less machinery=hiring workers=jobs.
c. If farm machinery broke in the field. repairing is very inconvenient. There will be no trailer to pull it away. This is a disadvantage of machinery.