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You are playing middle A (440 Hz) on the saxophone on a street corner. A trombone is playing middle A (440 Hz) in the open bed of a pickup truck as it approaches you. You hear a beat frequency of 4 Hz. What frequency do you hear from the trombone and what property of sound waves is being demonstrated in this problem? The frequency is either 444 or 436 Hz, and the property is the Doppler Effect, Fundamental Frequency, Harmonics, Speed of Sound in Air. (I think it's Doppler Effect.)
The density of a liquid sulfur compound is 1.14 gmL1. This compound contains 23.7% sulfur. How many milliliters of the compound must be burned to obtain 6.40 g of SO2?
Calculate the enthalpy of the reaction: 2NO(g) + O2(g) --> 2NO2(g) given the following reactions and enthalpies of formation: 1/2 N2(g) + O2(g) --> NO2(g), delta H *A = 33.2 kJ 1/2 N2(g) + 1/2O2(g) --> NO(g), delta H *B= 90.2 kJ
When compound X undergoes ozonolysis, acetone, is the only product produced. Propose a structure for compound X.
In which pair of substances below does the substance with the greater entropy not follow the substance with the lesser entropy
considering the given equationnbsp in whichnbsp 4p45s8 yields 4p4s10 then determine nbspthe maximum amount of
The kinetic energy of a rolling billiard ball is given by . Suppose a 0.17- billiard ball is rolling down a pool table with an initial speed of 4.5 . As it travels, it loses some of its energy as heat.
The Delta G for the freezing of H2O(l) at -10 Celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610J/mol
Calculate the minimum mass of hydrochloric acid that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits.
Predict that it was dissolved in HCl then mixed into the diethyl ether because diethyl ether is a base and since the benzoate contains an amine group they would remain unreactive with one another.
what mass of cesium bromide must be added to .500 l of water d 1.00gml to produce a 0.687 m solution? what are the mole
Describe the Liquid-liquid extraction of a mixture of potassium iodide , benzoic acid and napthalene. Explain reactions and interactions that are important
At 2000 degrees Celsius the equilibrium constant for the reaction 2NO (g) N2 (g) + O2 (g) is Kc=2.4x10^3 The initial concentration of NO is 0.174 M
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