If a kg of an ointment contains 350 gms of active ingredient, what is the percentage strength of the ointment? 25%. 35%. 50%. 70%.

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

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.

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?