1) Chromium(III) nitrate is classified as acidic because it is derived from a weak base (chromium(III) hydroxide Cr(OH)₃) and a strong acid (nitric acid HNO₃). 2) Sodium hydrosulfide is considered basic because it results from a strong base (sodium hydroxide NaOH) and a weak acid (hydrogen sulfide H₂S). 3) Zinc acetate is slightly basic since zinc hydroxide (Zn(OH)₂) is a stronger base than acetic acid (CH₃COOH).
Monomers combine through electron sharing during the polymerization process. This leads to the formation of a polymer, which consists of repeating units. The resulting substance has various applications.
What is being removed during the wash is the solvent.
Explanation:
The scale under her feet exerts an equal force but opposite in direction.
This principle aligns with Newton's third law of motion, which says that "for every action, there is an equal and opposite reaction."
As the girl’s weight presses down on the scale with a force of 42N, the scale responds with an equal upward force in the opposite direction.
The resulting net force is zero, which explains why her weight does not break the scale.
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