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Unit Conversions
A. Show that nmol/µL is equal to mM, and mg/mL is equal to g/L.
B. Cells of a certain human tissue have an average diameter of 20µm. A single circular well of a 100-well plate has a diameter of 5.0 mm. What is the maximum number of cells that can be grown on the surface of a single well? Assume all cells are circular but deform to fit together perfectly with no space between them.
C. If 27 mg of a fluorescent dye is added to 10 mL of buffer and the dye has a MW of 317.56 g/mol, what is the final concentration in mM?
A 12.00 g sample of manganese is heated and allowed to react completely with the oxygen in the air to form an oxide having a mass of 18.99 g. What are the moles for each component? Also, what is the whole number ratio of manganese to oxygen.
Which gives a better measure of the pH: the universal pH paper or a pH meter. Can distilled water be an effective buffer
At 25 °C and 775 Torr, carbon dioxide has a solubility of 0.0347 M in water. What is its solubility at 25 °C and 1370 Torr
Kb of ethylamine, urea and ammonia are 5.6 x 10-4, 1.5 x 10-14, 1.8 x 10-5, respectively. Arrange these bases in the increasing order of basicity
consider 1.5 kg of austenite containing 1.15 wt c cooled to below 727 degrees celcius 1341 degrees farenheit.a what is
The heat of reaction for the combustion of cyclohexane, C6H12, is 936.8 kcal/mol. What is the heat of combustion for cyclohexane in kcal/gram?
Given the equation 3CO(g) + Fe2O3(s) = 2Fe(s) + 3CO2(g) +24.7 kJ, how much heat is released when 56.0 g of CO react?
A 0.115 M solution of a weak acid (HA) has a PH of 3.33. Calculate the acid ionization constant (Ka) for the acid.
Calculate the cumulative acid equivalents per square meter that were deposited in the watershed over the entire period 1880-1950.
how many total moles of ions are released when each of the follwing samples dissolves completely in water?
The mixture is cooled to the temperature of liquid nitrogen at which ammonia freezes out and the remaining gas is removed from the vessel. Upon warming the vessel to 0.00 degrees C and 1 atm , the volume is 74.0 cm^3 .Calculate the mole fraction o..
A refrigeration tank holding 5.00 L of Freon gas (C2Cl2F4) at 25°C and 3.00 atm pressure developed a leak. When the leak was discovered and repaired, the tank had lost 76.0 g of the gas.
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