Which of the following substances has a pH closest to 7? ammonia
blood
lemon juice
vinegar

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

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.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as