Calculate the molality of the solution 0.892 mol solute; 0.205 kg solvent
Express your answer using three significant figures

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

All of the following are part of the biosphere except

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains