What is the name of the solid that will form from the following reaction: a solution of hydrofluoric (HF) acid poured over barium carbonate crystals.

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances

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.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?