Cecil writes the equation for the reaction of hydrogen and oxygen below.
h2 + o2 → h2o

why does his teacher ask him to balance the equation by including the correct coefficients?

a. to show that most molecules exist in pairs
b. to show that most compounds exist in pairs
c. to show that atoms are conserved in chemical reactions
d, to show that atoms are created in chemical reactions

Its C i just took the quiz on edunuity

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

: )

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.