Lanthanides and actinides

A. Group 1 elements

B. elements that make up the f block

C. elements of the s and p blocks

D. Group 17 elements

E. entire set of d-block elements

Why is the mass in amu of a carbon-12 atom reported as 12.011 in the periodic table of the elements?

Balance each of the following redox reactions occurring in basic solution. 1) H2O2 (aq) + ClO2 (aq) →ClO-2 (aq) + O2 (g) 2) Al (s) + MnO-4 (aq) →MnO2 (s) + Al (OH) - 4 (aq) 3) Cl2 (g) →Cl - (aq) + ClO - (aq)

The acid-dissociation constant, Ka, for benzoic acid is 6.5 * 10-5. Calculate the base-dissociation constant, Kb, for the conjugate base of benzoic acid. A. 9.3 * 105 B. 2.5 * 10-6 C. 6.5 * 109 D. 1.5 * 10-10

How do you get a liquid to a gas?

What is electropositivity and electronegativity? Between group 1 and group 17, which is electropositive and electronegative?

Where does Celsius boil

In physical changes, the atoms or molecules that compose the matter do not change their identity, even though the matter may change its appearance.

The electrolyte in a typical wet storage cell or battery is a mixture of water and A. lead. B. ammonium chloride. C. sulfuric acid. D. zinc.

Express 1.5 yards in cm

22. If one is traveling at 55 mi/h, how many meters will one travel in 42.3 minutes?