Use the data below calculate the lattice energy of magnesium chloride. Enthalpy of vaporization 127.4 kJ/mol 1st ionization Energy 737.7 kJ 2nd ionization energy 1450.7 kJ Enthalpy of dissociation 242 kJ/mol Electron affinity -349 kJ/mol Enthalpy of formation -641.62 kJ/mol

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet

Chromium(iii) sulfate is a transition metal compound containing the metal chromium and the polyatomic ion sulfate. the oxidation state of chromium in this compound is , and the chemical formula of the compound is ( ) . reset next