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Water at 20 degrees Celsius flows through a 25 mm diameter pipe at a rate of 40 liters per minute. Is the flow turbulent, laminar, or can it be either? Explain why.
Hint: One cubic meter contains 1,000 liters
Problem- If Magnesium is burned under pure nitrogen, a black powder, Mg3N2 is produced. Why then is the product gray when Mg(s) is burned in air?
The density of sodium borohydride is 1.492g*cm3. If 3.93 g of sodium borohydride contains 2.50*10^23 H atoms, Explain how many moles of H atoms are present in 28.0 cm3 of sodium borohydride
The volume of a gas at 95.0 kPa is 300.0 mL. If the pressure is increased to 177 kPa, what will be the new volume?
0.500 g of CuI was used to couple 2.0 mL of 1-hexyne what is the mole % of the CuI catalyst that was used? This is as Cu-catalyzed diazo coupling reaction that coupled ethyl diazoacetate with 1-hexyne.
If the uncertainty in velocity of an electron is 4700.0 m/s, what is the minimum uncertainty in its position
If I leave 750 mL of 0.50 M sodium chloride solution uncovered on a windowsill and 150 mL of the solvent evaporates, what will the new concentration of the sodium chloride solution be
Problem- I was performing an experiment that involved using a metal catalyst to aid the formation of acetanilide. We were unsuccessful, we did not see the metal cation catalysis of acetanilide after adding 0.002mol (0.37g) of Zinc powder into a mi..
In the presence of excess oxygen, what mass of NH3 is required to release 2175 kJ of enthalpy to the surroundings with this reaction at standard temp and pressure
how many milliliters of 0.105 m hcl are needed to titrate each of the following solutions to the equivalence point--
They are used as foaming agents, propellants, and refrigeration fluids. Freons are controversial because of the damage they do to the ozone layer in the stratosphere. A 5.87 g sample of a particular freon in a 3.45 L bulb at 25.00°C has a pressure..
A refrigeration system requires 1.5 kW of power for a refrigeration rate of 4 kJ/s. (a). What is the coefficient of performance? (b). How much heat is rejected in the condenser. (c). If heat rejection is at 40 deg. C, what is the lowest temperatur..
Show how you would accomplish the following synthetic transformations
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