How many moles of nitrogen gas is needed to react with 84.8 liters of hydrogen gas to produce ammonia gas? *giving brainliest please show work*

What is the relation between concentration of reactants and the rate of chemical reaction?

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

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.