I need these two questions answered will give Brainliest for them!! Combination of ∆H1, ∆H2, and ∆H3 needed (using Hess’s law):

The published value for this reaction is –603 kJ/mol. What is the percent error of your experimental value?

it's c. elements are placed in rows based on how may valencies electrons have.

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.

the answer would be a