If 2.2 moles of NaHCO3 are reacted and 19.10 liters of CO2 are formed, at STP, what is the percent yield of the reaction? 2NaHCO3 (s) = Na2CO3(s) +CO2(g) + H2O(g)

What are the genotypic and phenotypic ratios

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

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.