A recipe for spaghetti souce requires 2.5 cups of tomato sauce. If only metric measures are available, how many milliliters of tomato sauce are needed?(1qt = 4 cups, 1q = 946 mL)

What type of reaction is zn + cucl2 → cu + zncl2?

How do you lengthen a pattern piece? (family and consumer science, sewing)

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.