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A student is examining a bacterium under the microscope. The E. coli bacterial cell has a mass of m = 1.80\rm fg (where a femtogram, \rm fg, is \rm 10^{-15}\; g) and is swimming at a velocity of v = 6.00\mu m/s , with an uncertainty in the velocity of 2.00\% . E. coli bacterial cells are around 1 \mu \rm m ( 10^{-6}~\rm m) in length. The student is supposed to observe the bacterium and make a drawing. However, the student, having just learned about the Heisenberg uncertainty principle in physics class, complains that she cannot make the drawing. She claims that the uncertainty of the bacterium's position is greater than the microscope's viewing field, and the bacterium is thus impossible to locate.What is the uncertainty of the position of the bacterium?
A goose is flying south for the winter at a constant speed. Keep in mind that one mile is 1.61 , and one pound is 454 .The goose has a mass of 20.1
The most common source of copper is the mineral chalcopyrite. How many kilograms of chalcopyrite must be mined to obtain 320. of pure copper?
Calculate the molarity of 464 mL of a solution that contains 135 g of sucrose C12H22O11
Calculate the fraction of atom sites that are vacant for silver at 695°C. Assume an energy for vacancy formation
a 150.0 g sample of metal at 80 c is added to 150.0g of H2O at 20 c. the temperature rises to 23.3 c. assuming that the calorimeter is a perfect insulator, what is the specific heat of the metal?
Calculate the number of bromine molecules present in the flask if A flask contains 0.350mol of bromine, Br2 in liquid form .
Calculate the standard reaction enthalpy for the reaction above (as written) using the following data: N2(g) + O2(g) -→ 2 NO(g)
How much heat is evolved when 3ll.5g of ammonia (NH3) gas condenses to a liquid at its boiling point? ^Hvap= 23.3 kj/mol.
if the level of solution in the column drops below the level of the resin, channels will be formed in the resin column.How will this influence the efficiency of ion exchange in the column?
The heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) 2 NH3(g) + CO2(g) At a certain temperature the equilibrium pressure of the system is 0.318 atm. Calculate KP for the reaction.
Make a new solution with a total volume of 10.0 mL and How many moles are contained in 500.0 mL of solution
A gas measures 180.0 mL at 87.0°C and 800.0 mm. Find its volume at standard temperature and 800.0 mm of pressure.
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