25.00 ml of heavy water at 20 degrees celcius was pipetted into a 37.234 g beaker. the final mass of the beaker was 64.859 g. what was the density of the water at 20 degrees celcius?

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride