<h2>Answer:</h2>
Option B is correct.
b. extending outward is more economical than extending upward
<h2>Explanation:</h2>
people tend to move from rural areas to urban for the greater facilities that they can enjoy at cities. This urban sprawl is also very economic because people will get more chances of jobs, business and work hence improving the economy.
Answer:
False
Explanation:
2CH₄ + 2O₂ ⟶ 2CO₂ + 2H₂O
Let’s count the atoms on each side of the reaction arrow.
<u>Atom</u> <u>On the left</u> <u>On the right</u>
C 2 2
H 8 4
O 4 6
C is balanced, but there are different numbers of H and O on each side.
The equation is not balanced
.
<span>19. Single displacement reactions are always redox reactions (they include reaction between an element and a compound where they will take place of another element in that compound).
20. It should be single displacement, where the displaced ion would form gas.</span>
