The unit cell for fe3o4 (feo-fe2o3) has cubic symmetry with a unit cell edge length of 0.839 nm. if the density of this material is 5.24 g/cm3, compute its atomic packing factor. the ionic radii of fe2+, fe3+ and o2- are 0.077 nm, 0.069 nm and 0.140 nm, respectively. in addition, the atomic weights of iron and oxygen are, respectively, 55.85 g/mol and 16.00 g/mol. apf = entry field with correct answer 0.69

Fine out your self ponk

12 is probably the typical age for a first kiss but i think its to young.

Heat of fusion= heat/mass  heat of fusion = 12.03kj/36 g= 0.3342 kj/g or 334.2 j/g

The answer to the question: choose the correct statement.  a) when ethane reacts with fluorine gas the product is less stable.b) addition reactions of unsaturated hydrocarbons and halogens requires a high activation energy.  c)the double covalent bond within unsaturated hydrocarbons requires a lot of energy to break.  d)the double covalent bond within unsaturated hydrocarbons can be broken easily.is: a) when ethane reacts with fluorine gas the product is less stable.