Which of the following is a characteristic of science? A It asks questions about the natural world.
B It asks questions that cannot be tested.
C It is done by only one scientist at a time.
D It uses opinions to make conclusions.

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.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?