4. in order to decide whether a property is chemical or physical, you must know whether a. chemical or physical changes occur when the property is measured b. the property is extensive or intensive c. the property is intrinsic or extrinsic d. the property involved energy or matter

Two things that biomedical has invented or innvated

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

0.2348 grams of pbcl2 used to form 44.0 ml of solution.