Part A A heat lamp produces 27.0 watts of power at a wavelength of 6.9 µm . How many photons are emitted per second? (1 W = 1 J/s. ) Express your answer to three significant figures. • View Available Hint(s) ΑΣφ ? N = photons/s

What is the best synonym for each? substrate enzyme enzyme-substrate complex intermediate reactant catalyst

Predict the product(s) obtained when each of the following compounds is treated with a mixture of nitric acid and sulfuric acid. Select all that apply. 18.41d * Your answer is incorrect.

chemhelp7 The researcher determined the Pb content of water sample from a river suspected to be contaminated with Pb from a nearby factory by complexing with cyanidine and the absorbance measured was 0.405. What is the lead content of the water sample? a. 4.23 ppm b. 4.28 ppm c. 207 ppm d. 333 ppm

NOTE: no need for explanation, just answer it with correct letters.

Which of the following is classified as abortificient? Quinine Pitocin Alcohol Use of foreign objects All of the above

Trace amounts of n2o has been detected up to what hours or long after use

Can you answer question 16 show your step

Glucose levels are routinely monitored in patients suffering from diabetes. The glucose concentrations in a patient with mildly elevated glucose levels were determined in different months by a spectrophotometric analytical method. What is the mode of the glucose concentration on Month 2? Time Glucose Concentration (mg/mL) 1108, 1122, 1075, 1099, 1115, Month 1 1083, 1100 Month2 992, 975, 1022, 1001, 991 Month 3 788, 805, 779, 822, 800 Month 4 799, 745, 750, 774, 777, 800, 758 992 mg/L 996 mg/L 101 mg/L O None of these

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