What is the mass in grams of Na_2CO_3(s) (molar mass = 105.98 g/mol) that, when dissolved in 1.357E+2 mL of water, will make a 1.29E-1 M aqueous solution?

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?

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

Label a-f based on the table using c for concentrated and d for dilute