If i use 0.0395 kg of water to dissolve 0.0189 kg of salt, what is the mass percent of this solution?

Can smoke be transformed into liquid or used as energy or both?

Why does his teacher ask him to balance the equation by including the correct coefficient

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.