22(a). Limestone is used to make cement Samples of limestone from different quarries contain different amounts of calcium carbonate. A technician heats different powdered limestone samples so they undergo thermal decomposition and collects the carbon dioxide produced.

Describe and explain how the results from the experiments could be used to indicate which sample is the purest Assume that the limestone contains no other carbonates
include a labelled diagram to show how the equipment could be set up.

Which orbitals form a pi bond? a.the s orbital and three p orbitals b.the s orbital and two p orbitals c.overlapping p orbitals d.overlapping hybrid orbitals

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Why are people not able to scuba dive in the deep part of the ocean