Provide the best molecular formula for silver phosphate

Specify the number of protons, neutrons and electrons in the neutral atom fluorine-19. # protons # neutrons # electrons

The ion S2- has protons and electrons.

The best name for Cu(OH)2 would be…

Silicon has three naturally occurring isotopes (Si-28, Si-29, and Si-30). The atomic mass and natural abundance of Si-28 are 27.9769 amu and 92.2 %, respectively. The atomic mass and natural abundance of Si-29 are 28.9765 amu and 4.67 %, respectively. Find the natural abundance of Si-30. Express your answer numerically using three significant figures. 

The best name for Fe2(SO4)3 would be…

Specify the number of protons, neutrons and electrons in the neutral atom cobalt-59. # protons # neutrons # electrons

Iridium has only two naturally occurring isotopes. The mass of iridium-191 is 190.9605 amu and the mass of iridium-193 is 192.9629 amu . Use the atomic mass of indium to calculate the relative abundance of iridium-193. Enter a numerical answer only, but in terms of percentage.

Express square yards in square centimeters. Enter your numerical answer in units of square centimeters.

Why are you taking this practice quiz?