Europium (Europium is a chemical element with the symbol Eu and atomic number 63 )crystallizes in a body-centered cubic lattice compute the unitcell edge length in pm if The density of Eu is 5.26 g/cm3..
Rate constant of certain first-order reaction =2.50×10-2 s-1 at 17 degree Celsius temperature. if Ea = 85.0 kj/mol then determine the value of k at fifty degree Celsius temperature?