How much is 6.10^23 in grams?

Compounds with 2 ions bonded are called

Which of the following procedures demonstrates repetition? A. Jeremiah measures the mass of five different strips of metal. He places the strips in five different test tubes filled with hydrochloric acid.

Ignoring sign which transition is associated with the greatest energy change? N=1 to n=3 N=3 to n=5 N=2 to n=1 N=3 to n=2

Lye is a common ingredient in drain cleaning products. It is made of one atom of sodium, one atom of oxygen, and one atom of hydrogen. Which of the following correctly represents the chemical formula for lye? NaOH Na 1O 1H 1 SOHe S 1O 1H 1

Particles are arranged in a crystal structure in a sample of: a) H2 (g) b) Br2 (L) c) Ar (g) d) Ag (s)

Organic compounds ALL contain the element carbon. Which organic compound, used for stored chemical energy, contains carbon, hydrogen, oxygen, and often phosphorous?

In a polar molecule, which atom will have the greatest partial negative charge? A) the smallest atom B) the least electronegative atom C) the largest atom D) the most electronegative atom

Why is portion control important

Which ionic compound is the most likely to dissolve in water? CaSO4 Na2SO4 BaSO4 SrSO4

Calcium (atomic number 20) has electron configuration 1s2,2s2,2p6,3s2,3p6,4s2. The atomic number of scandium is 21. Which orbital does the 21st electron enter? a. 3d b. 4p c. 4d d. 4f