As a student How can you be literate in media and information but about my mother's knowledge​

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

A0.652-g sample of a pure strontium halide reacts with excess sulfuric acid. the solid strontium sulfate formed is separated, dried, and found to weigh 0.755 g. what is the formula of the original halide?