Experiment: phase changes, what was the temperature of the ice before you added heat?

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!

At which temperature would a reaction with ah= -220 kj/mol and as=-0.05 kj/(mol-k) be spontaneous?

What is the density, d, of a substance with a volume of v = 12.5 cm3 and a mass of m = 74.4 g ?