Explain in your own words what empirical evidence is.

You can still go to work, although you should not work with food or in food preparation areas, if you have which of the following illnesses?

The percent ionization of a weak acid increases with K, a. True b. False

How many moles of HNO3 are present if 2.50*10-2 mol of Ba (OH) 2 was needed to neutralize the acid solution?

What are groups 1, 2, and 3 examples of on the periodic table? A. Nonmetals B. Metals C. Noble gases D. Metalloids

Which of the following is an oxidation-reduction reaction? • SO2 (g) + H2O (1) H2SO3 (aq) • CaCO3 (s), Cao (s) + CO2 (g) Ca (OH) 2 (s) + H2CO3 (1) CaCO3 (aq) + 2H2O (1) • CsH1206 (s) + 602 (9) _, 6C02 (g) + 6H20 (7

How do the reaction rates change as the system approaches equilibrium?

Based on the symmetry of the molecules, which is a polar molecule? SeCl2 (bent) BeCl2 (linear) BF3 (trigonal planar) CF4 (tetrahedral) O2 (diatomic linear)

7) change 21.1 mg into grams

Why is an ionic solution a good conductor of electricity while a covalent solution is a poor conductor

How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Show all of the work needed to solve this problem. Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)