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When X rays of wavelength 0.096 nm are diffracted by a metallic crystal, the angle of first-order diffraction (n = 1) is measured to be 15.2°. What is the distance between the layers of atoms responsible for the diffraction?
In what direction do the functions point? What orbitals are"left" unused on the C atom?
The normal boiling point of bromine is 58.8°C. Given that the vapor pressure of methanol is 75.0 torr at 2.5°C, calculate the molar enthalpy of vaporization of bromine.
Calculate the value of the reaction quotient Q. (b) Is the system at equilibrium? If not, predict which way (right or left) the reaction will proceed to reach equilibrium.
calculate the concentration of the hydronium ion in a solution prepared by mixing equal volumes of .050 molar HOCL and .020 molar NaOCl
If the chemist mistakenly makes 275 mL of solution instead of the 200 mL, what molar concentration of sodium nitrate will the chemist have actually prepared?
what is the vapor pressure of ethanol at 290 K when heat of vaporization is equal to 38.56 kJ/mol and the normal boiling point is 351.4?
Consider the reaction CaCN2 + 3 H2O → CaCO3 + 2 NH3 . How much CaCO3 is produced if 47.5 moles NH3 are produced
when 7.00 moles of gas A and 3.00 moles of gas B are combined, the total pressure exerted by the gas mixture is 1.0 atm. What is the partial pressure exerted by gas a in this mixture
a 75.0 mL sample of potassium hydroxide, KOH, of unknown concentration is titrated with 42.5 mL of 0.575 M acetic acid. How many moles of KOH were in the sample?
An airplane is pressurized to 650 mmHg. If air is 21% oxygen, what is the partial pressure of oxygen on the plane?
175g of water was heated from 15c to 88c. how many calories were absorbed by the water
A piston-cylinder device contains a saturated mixture of steam and water having a total mass of 0.5 kg at a pressure of 160 kPa and an initial volume of 100 liters
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