How many moles of iron are present in 3.15 x 1023 atoms of iron?

What dose it mean that the mantle that lies beneath the crust is largely dominated

Bases form hydrogen ions when in a solution

What value should you calculate when pka2 and pkb2 are added together?

The percent composition by mass of a compound is 76.0% c, 12.8% h, and 11.2% o. the molar mass of this compound is 284.5 g/mol. what is the molecular formula of the compound?

1. If Styrofoam ball and a steel ball are the exact same size & shape: a. Describe the volume (which has more, or are they the same) :

The density of water is 1.0 g/cm3 will rubbing alcohol float with a density of 0.81 g/cm3

Write an equation that shows the formation of the phosphide ion from a neutral phosphorus atom.

Which of the following terms is defined by the measure of mass per unit of volume? gravity density weight acceleration

Select the lon. O NO₂ H2SO4 O A3

True or False: A Solar eclipse occurs when Earth casts a shadow on the Moon.