5. For TLC analysis, a student calculates the following Rf values for her samples:
0.69=aspirin; 0.80=Ibuprofen; 0.74=acetaminophen; 0.87=naproxen; 0.95=caffeine.
0.72=over-the-counter drug (unknown). What is the probable identity of the unknown?
Explain.

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

What is a property of a double replacement reaction

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?