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A rocket motor is designed to give 10, 000 N thrust at 10, 000 m altitude. The combustion chamber pressure and temperature are 2 × 106 P a and 2800°K, respectively. The gases exit the combustion chamber through a Laval nozzle. Find the exit Mach number, and the cross-sectional areas of the exit and the throat of the nozzle. Assume the nozzle flow is isentropic and one-dimensional, and that the ratio of specific heats γ for the combustion gases is 1.32.
At 50°C the vapor pressure of ethanol is 0.30 atm, acetic acid is 0.08 atm, water is 0.12 atm, and acetone is 0.84 atm. A) Arrange these substances in order of increasing rates of evaporation.
Calculate the molar solubility of stronium fluoride (SrF2) when dissolved in a 0.0800 M solution of stronium nitrate
Calculate the molarity of a solution made by adding 44.4 mL of concentrated ammonia (28% by mass, density 0.880 g/mL) to some water to some water in a volumetric flask
Calculate the pH at 25°C of an aqueous solution that is 0.320 M in ethylamine and 0.140 M in ammonia (i.e. the solution contains both compounds). The pKa of the conjugate acid of ethylamine is 10.65 and the pKa of the conjugate acid of ammonia is ..
A trial of this decomposition experiment, using different quantities of reactants than those listed in the question above produced the following data: Volume of O2 produced at room conditions
Utilizing a previously prepared beer's curve he determined the connection of his dilution to be .00256 M. Find out the concentration of the original unknown sample
What is the speed of an electron ejected from a metallic surface, where the metal work function is 2.06 eV and the radiation is at the following wavelengths
A metal sample weighing 71.9 g and at a temperature of 100.0 degrees C was placed in 41.0 g of water in a calorimeter at 24.5 degrees C. AT equilibrium the temperature of the water and metal was 35.0 degrees C. What was delta t for the water?
What would the consequence of a "mistake" be?
A 1.000g sample of red phosphorus powder was burned in air and reacted with oxygen gas to give 2.291g of phosphorus oxide. Calculate the empirical formula & molecular formula of phosphorus oxide given the molar mass is approximately 282 g/mol
If a sample solution is 5.00% H2O2 by mass and has a density close to 1.0 g/mL, find the approximate molar concentration of the H2O2 in the solution
calculate deltas if 1 mol of liquid water is heated from 0.00degrees c to 10 degrees c under constant pressure if cpm
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