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Tests on a sphere are conducted in a wind tunnel at an air speed of U0. the velocity of flow toward the sphere along the longitudinal axis is found to be u=-U0(1-r0^3/x^2) where r0 is the radius of the sphere and x is the distance from its center. determine the acceleration of an air particle on the x-axis upstream of the sphere in terms of x, r0 and U0.
The final, dried product weighed 0.1314 g. What is the percent weight of Zn (65.39 g/mol) in the original sample
How many milliliters of 0.200 M NaOH will be required to titrate 7 mL of 0.479 M H2SO4
Although there are a great variety of lipid structures, most lipids contain: A) A large hydrocarbon portion and no polar groups B) A large hydrocarbon portion and a few polar groups
For a reaction in which delta H= -360.1 kJ/mol and delta= - 90.0 J/K*mol, determine the temperature (in *C) below which the reaction is spontaneous.
Calculate the amount of heat required to completely sublime 23.0g of solid dry ice (CO2) at its sublimation temperature
that the reaction was endothermic. If the enthalpy of reaction is negative, then we say that energy was released or that the reaction was exothermic. Most chemical reactions are exothermic.
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
A biochemist is trying to purify the enzyme hexokinase from a bacterium that normally grows in the Arctic Ocean at 5C. In the next lab
write molecular, complete ionic, and net ionic equations for the reactions that occur, if any, when solutions of the following substances are mixed? a. nitric acid and potassium carbonate
calculate the ph of buffer solution made from .20 M HC2H3O2 and .050 M C2H3O2 that has an acid dissociation constant for HC2H3O2 of 1.8*10-5.
Electromagnetic radiation with a wavelength of 725 nm appears as red light to the human eye. The frequency of this light is
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295k and volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1 mL atm K^-1 mol..
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