Auv-vis experiment was conducted at 592 nm for an aqueous solution of copper analyte in the presence of nickel interferent. the selectivity coefficient ka, i = 15.5. in one experiment, [cu2+] = 60.0 mm and [ni2+] = 15.0 mm. the average absorbance was measured as 0.465 au with an average blank signal of 0.0105 au. what is the absorbance, in au, due to cu2+ only?

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.