A group of grade 8 students went to visit the nearby cement factory to investigate the materials to produce cement.
In their report the following main materials are used in cement production
EXCEPT
А. calciun oxide.
B. alumina
C. sodium hydroxide
-D iron oxide.​

What forms when chemical reactions combine pollution with sunlight?

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?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.