Suppose zinc combined with hydrochloric acid and produced zinc chloride and hydrogen gas in the following equation 652-02-05-03-00_files/i002.jpg. according to the equation, how many hcl molecules are needed to fulfill the conservation of mass

What are the variables in gay-lussac’s law? pressure and volume pressure, temperature, and volume pressure and temperature volume, temperature, and moles of gas

0.09 moles of sodium sulfate in 12 ml of solution

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.