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As we know that halogens are ring deactivater agents then how they are Ortho para directing???

• What are the similarities and differences between 18th-century automata, Grey Walter’s Tortoises, and modern digital computers?

4.00g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 60./gmol, is burned completely in excess oxygen, and the mass of the products carefully measured:

Use this information to find the molecular formula of X

What are the similarities and differences between classical cognitive approaches vs. connectionism and embodied cognition?