Determine the quantity of unknown protein that has an absorbance of 0.228 when a blank has an absorbance of 0.082. the previously determined calibration curve has the form of a straight line with the equation a = 0.0182 × x 0.007, where a is the corrected absorbance and x is quantity of protein in units of μg.

Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.