Calculate the mass in grams of aluminium that can be formed from 1020g of aluminium oxide using the equation: 2Al₂O₃ → 4Al + 3O₂

Which of these conditions most likely produces an unstable isotope?

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

Surface currents are caused by blank space . question 14 options: surface currents are caused by? differences in water temperature high salinity differences in density wind forces