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This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.
Mixture of polymers and solvent on a lattice. Flory–Huggins solution theory is a lattice model of the thermodynamics of polymer solutions which takes account of the great dissimilarity in molecular sizes in adapting the usual expression for the entropy of mixing.
An aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula . For example, a solution of table salt , also known as sodium chloride (NaCl), in water would be represented as Na + (aq) + Cl − (aq) .
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
From January 2008 to December 2012, if you bought shares in companies when Mark D. Ketchum joined the board, and sold them when he left, you would have a -21.8 percent return on your investment, compared to a -2.8 percent return from the S&P 500.
The 2024 NBA Cup in-season tournament concludes Tuesday night in Las Vegas when the Milwaukee Bucks take on the Oklahoma City Thunder.
The first woman was elected to lead a country 64 years ago. Here’s a look at where, and when, women have secured national leadership positions since then.
"The first outbreak will linger into Jan. 4, the second on Jan. 7-8 and then the third round on Jan. 11-12." Additional rounds of Arctic air may follow but be directed more toward the Midwest and ...