Una solución comercial de HCl tiene 87.2% (por masa) HCI en agua. Determine la molalidad de HCI, si la solución tiene una densidad de 1.18 g/mL.

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction

Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas