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1. Methane (CH4) at 20°C flows through a pipe at a speed of 400 m/s. For methane, R = 518.3 J/(kg · K), γ = 1.32. Is the flow subsonic, sonic, or supersonic?
2. Find the stagnation pressure and temperature of air flowing at 100 f t/s if the temperature in the freestream is 60°F and the pressure is atmospheric.
Explain your choice of reagents, and comment on the required order of the synthetic steps where appropriate.
If the initial pressure of the ether is 135 torr, what is its partial pressure after 1420 s? (Note, since the volume and temperature don't change, the pressure is directly related to number of moles and so the pressure can be treated similar to co..
The number of directions each rod can point in per unit solid angle is λ. Consider a dilute system (N
The percent composition by mass of a compound is 76.0% C, 12.8% H, and 11.2% O. the molar mass of this compound is 284.5 g/mol. Explain what is the molecular formula of the compound
Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 1.505-g sample of Mg metal is added to 150.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. What mass of H2 is formed
How many milliliters of a stock solution of 5.60 M HNO3 would you have to use to prepare 0.160 L of 0.510 M HNO3; if you dilute 18.0 mL of the stock solution to a final volume of 0.330 L, what will be the concentration of the diluted solution
One of the sodium oxoacid salts of chlorine (there are 4 salts, each containing Na, Cl, and O) was analyzed. A 17.00 g sample was found to contain 3.68 g Na and 5.67 g Cl.
What is the major product when p-fluoroanisole reacts with sulfur trioxide and sulfuric acid. If applicable, minimize formal charges via expanded octets
An excess of aqueous AgNO3 reacts with 41 mL of 5 M K2CrO4(aq) to form a precipitate. What mass of the percipitate is formed
what is the heat flow of hot water added to cold water? What is the heat flow of the cold water? hot water was 52.5 C the cold water was 21.7 C the final temperature was mass of cold water was 49.35g
When you calculate the molarity and molality of the EDTA solution are the values very similar or not. Explain if this is what you might expect for a dilute aqueous solution with a density very close to 1.0 g/mL.
A colored complex of unknown sample solution exhibits 23% transmission through 1-cm long cuvette. A 1/1 dilution solution exhibits a transmission of 47.8%. The transmission from the blank solution is 96%. Calculate the molar absorptivity of the co..
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