13 A 4.85 g sample of anhydrous sodium sulfate is dissolved in water and the solution made up to
250 cm in a volumetric flask.
What is the concentration in mol dm- of sodium sulfate in the solution?
A
0.0341
B
0.137
NO
С
0.163
D
0.273
O
А

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?

What would happen to a weak base dissociation equilibrium if more products we added

What type of reaction is this equation c2h5s + o2 > co2 + h2o + so2