Some elements located on the periodic table in groups 3 to 12 have valence electrons in the d - or f - orbitals. What are these elements called?

A. representative elements

B. transitional elements

C. actinides

D. lanthinides

Which is the closest antonym for the word prone?

Who is credited with creating the first periodic table? Johann Dobereiner Henry Moseley Dmitri Mendeleev John Newlands

A sample that is 74.5 percent chloride by mass is dissolved in water and treated with an excess of AgNO3. If the mass of the AgCl precipitate is 1.115 g, what was the mass of the original sample?

Where is a product found at the beginning or end of a chemical reaction?

Phenazopyridine is used to treat what

A man is making chicken noodle soup and has found it to be too salty. What method could he use to make the soup less salty? a. Add equal measured amounts of water to the soup. b. Bring the soup to a boil so that some of the broth evaporates. c.

A solution of H2SO4 (aq) with a molal concentration of 3.97 m has a density of 1.216 g/mL. What is the molar concentration of this solution?

How can you chose values for x when making a table of values representing a real world situation?

If a sample containing 2.50 ml of nitroglycerin (density=1.592g/ml) is detonated, how many total moles of gas are produced?

A helium balloon initially at room temperature is dunked into a bucket of liquid nitrogen (T = 77 K). Which of the following will occur?