Why should the water jacket of the calorimeter be reflectiv
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Why should the water jacket of the calorimeter be reflectiv
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- Why is it that a warm cuvette does not lose any significant heat during the absorbance measurement or during the transfer to the spectrophotometer?What is the reason for the decrease in the ABS value over time when measuring in the spectrophotometer?The nurse notes the patient's IV pump is set at 12 mL/hr. The IV bag holds 20 units of Pitocin mixed in 500. mL of Lactated Ringers. How many mu/min is the patient receiving. Note that mu is milliunits. 6mu/min 48 mu/min 12 mu/min 0.48 mu/min 8 mu/min
- Given the following absorbance spectrum, to what wavelength should you set the spectrophotometer to measure your samples? Absorbance 400 500 600 Wavelength (nm) 700A radiograph was produced using 80 kVp, 800 mA, .75 seconds and a 72 inches SID. In order to maintain the same density, how much time should be used with the following factors: 92 kVp, 200 mA, and 36 inches SID?It is possible to make a perfectly precise measurement?Explain.
- What solution goes into the cuvette when you’re zeroing the spectrophotometer?A 46.60-gram pycnometer was filled with 100.50 grams of liquid. When filled with insoluble powder, the pycnometer weighs 84.60 grams. When the insoluble powder and liquid were combined, the pycnometer weighed 172.8 grams. What is the relative density of the insoluble powder?A 46.60-gram pycnometer was filled with 100.50 grams of liquid. When filled with insoluble powder, the pycnometer weighs 84.60 grams. When the insoluble powder and liquid were combined, the pycnometer weighed 172.8 grams. What is the relative density of the insoluble powder? 2.1 2.6 3.1 None of the Above
- Two compounds have Rf values of 0.50 and 0.61, respectively. The solvent front on a plate is developed to 10 cm. How far apart in centimeters are the spots for the two compounds?A student performed the fractional distillation of a cyclohexane/toluene mixture. The refractive index of the distillate was measured at 1.4301 with an ambient temperature of 22.0°C. What is the mole percentage of cyclohexane (to 3 sf)? 94.5 IncorrectWhat are the classification and functions of stage, condenser, illuminator, coarse adjustment knob, base