Cho 100g dd Na2CO3 16,96%, tác dụng với 200g dd BaCl2 10,4%. Sau phản ứng, lọc bỏ kết tủa được dd A. Tính nồng độ % các chất tan trong dd A

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

One does not belong why? ice, gold ,wood ,diamond and table salt

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?