How many milliliters of solution of 2.15 m k2so4 must be used to make 63 ml of a solution that has a concentration of 0.188 m k2so4 ?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

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?