Consider the following reaction:
nh4hs(s)_nh3(g)+h2s(g)
an equilibrium mixture of this reaction at a certain temperature was found to have [nh3]= 0.272m and [h2s]= 0.365m .

what is the value of the equilibrium constant (kc) at this temperature?

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.

How many moles are in 43.9 l of oxygen