18.8g of a gas occupies 14.5 L at 79.9kPa at 30c. what is the molecular weight

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

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.

Is laundry detergent an acid or a base?