Methyl viologen (also called paraquat) is a redox active dye that is blue in the reduced state and colorless in the oxidized state. The reduced compound is capable of passing electrons to and from the active centers of redox active enzymes. The molar absorptivity of methyl viologen at a wavelength of 600 nm is 13,000 L/(cm. mol). Use Beers' law to determine the concentration of a methyl viologen solution that has an absorbance of 1.600 in a 1.00 cm cuvette. Show all calculations.

Listen base your answer to the question on the information below.propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below.c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol.what is the correct structural formula for a molecule of methanethiol

An observation that requires measurement is called quantitative observable or qualitative

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?