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You place element A into a graduated cylinder and it displaces 5.5 mL of water. You weigh it on an electronic balance and it weighs 25 g. What is the density of element A?
The density of aluminum is 2.70 g/cm3 and the density of chromium is 7.19 g/cm'.If equal masses of aluminum and chromium are transferred to equal volumes of water in separate graduated cylinders.
Calculate the change in the molar Gibbs energy of hydrogen gas when its pressure is increased isothermally
Problem- In TLC which bands correspond to which compounds in the crude spinach extract, discuss how the measured data supports conclusions, and discuss the purity of the bands?
A gaseous compound containing carbon and hydrogen was analyzed and found to consist of 83.65% carbon by mass. What is the empirical formula of this compound
What is the effect of a pressure change from 760 torr to 202 kPa, and the temperature changes from 37 degrees Celsius to 155K on the volume of 1 mol of an ideal gas
The reaction was determined to be first order with respect to both hydrogen and iodine gases. Explain what overall order of the reaction and what are the units of the rate constant
The crystal field splitting energy for a complex is 160 kJ/mol. What wavelength of light is absorbed by this complex? A) 750 nm (red light)
Water, sodium hydroxide, and 1,6-hexanediamine are all potential nucleophiles. Yet, only 1,6-hexanediamine reacts with the adipoyl chloride. Offer an explanation as to why.
The following compound has two stereoisomers. One has a dipole of 0 D, and the other has a dipole moment of 2.95 D. Draw the structure of the stereoisomer with dipole moment of 2.95 D.
Calculate the equilibrium concentrations for all species: B. Calculate the value of the equilibrium constant, K.
What are the concentrations of HSO4-, SO42-, and H+ in a 0.255 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 10-2.)
Calculate the molar solubility of iron sulfide in a solution that is saturated with hydrosulfuric acid, H2S ( [H2S] = 0.1 M) and has a pH of 2.0. Ka1 = 8.9 x 10^-8 and Ka2 = 1.2 x 10^-13.
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