John roger's stephens left a 3.5 kg iron shovel outside through the winter. the shovel now orange with rust, is rediscovered in the spring. it's mass is 3.7kg. how much oxygen combined with the iron?

The element that has the greatest electronegativity is

Two nails have identical sizes and shapes. in one nail, 20 percent of the domains are lined up. in the other nail, 80 percent of the domains are lined up. which has stronger magnetic force? first answer gets brainliest!

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.