1 Fe3O4 + 4 H2 → 3 Fe + 4 H2O Calculate the number of grams of Fe3O4 that are required to react completely with 3.75 x 1024 molecules of H2.

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.

What is the standard unit of measure for acceleration?

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons