The quenching of tryptophan fluorescence by dissolved o2 gas was monitored by measuring emission lifetimes at 348 nm in aqueous solution. (a) determine the quenching rate constant (ko) from the following data by substituting (τ/t) in place of (θ.0/9) in the stern-volmer equation and then dividing both sides by to. use excel or another plotting tool to fit the data to the resulting form of the stern-volmer equation and show your plot in the space below, with both the linear fit and the r2 value shown on the plot. (hint: watch your units when interpreting you plotline fit! ) [02]/mol/l t /109 s 0.000 0.023 0.055 0.080 0.108 2.60 50 0.92 0.7 0.57

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

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

What is the largest environment on earth?