CHEMISTRY H E L P In the following chemical reaction, what reactant is represented by X? AlCl₃ + X → Al(OH)₃ + NaCl

A) NaOH
B) ClOH
C) Al(OH)
D) It cannot be determined.

108

explanation:

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first one is the correct answer

c is the answer because when something is left after something evaporates that shows the chemical change.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.