A standard solution of 112 ppm Yellow 6 dye was prepared. A 25.1 mL aliquot of the stock Yellow 6 dye was diluted to 25 mL in a volumetric flask. What is the concentration (in ppm) of this dilute Yellow 6 dye

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6