the Mass Product Produced Res

A student follows a lab protocol that asks them to make an ‘alcohol’ solution for an experiment. They make a 1.00 L solution by adding 575 g of an alcohol to water. Later they realize that there were three different alcohols sitting on the lab bench and they’re not sure which one they used. The alcohols are: methanol (CH3OH), ethanol (C2H5OH), and butanol (C4H9OH). They decide to boil the solution and they find that it boils at 106.40 °C. Using this information determine which alcohol the student used to make their solution. Density of water is 1.00 g/mL, Kb = 0.513 K/mc. Hint: you need to consider the molar masses of your alcohols.

Write the balanced chemical equation then write the complete ionic and then the net ionic equation for Aluminium and copper (II) sulfate.

2. Hemoglobin is a protein that carries oxygen in the blood. It absorbs light strongly at a wavelength of 400 nm, which gives blood its red color. A solution of hemoglobin is diluted to 10 times its original volume (1.0 mL hemoglobin + 9.0 mL water). The diluted solution has an absorbance value of 0.354. a) Determine the absorbance value of the original solution. Explain how you arrived at your answer. b) It would be simpler to measure the absorbance of the original solution directly. Explain why it is better to dilute the solution before measuring the absorbance for this sample. 3. Why is it important not to touch the sides of the cuvette with your fingers?