If 125 g of crude acetic acid (CH3COOH) contains 40 grams of carbon, what is its purity percentage?

Does the energy in a solid increase or decrease when changing to a liquid?

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d. the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?