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A piece of turquoise is a blue-green solid; it has a density of 2.65 g/cm3 and a mass of 2.5 g.
(a) Which of these observations are qualitative and which are quantitative?
(b) Which of the observations are extensive and which are intensive?
(c) What is the volume of the piece of turquoise?
Problem- A line in the Paschen series of hydrogen has a wavelength of 1880 nm. From what state did the electron originate. In what region of the electromagnetic spectrum is this line observed
Calculate the change of entropy for the water, ΔS water, and for the surroundings, delta S surroundings, when 1.00 mole of water freezes at 0 degrees C and the surroundings are at (a) 0 degrees C, (b) -2 degrees C. Explain the physical origin of t..
Mixtures of helium and oxygen are used in scuba diving tanks to help prevent the bends, which is a condition caused by nitrogen bubbles forming in the bloodstream.
A chemist places 1.7823 g of Na2SO4 in a 100 mL volumetric flask and adds water to the mark. She then pipets 10 mL of the resulting solution into a 50 mL volumetric flask and adds water to the mark and mixes to make a solution.
The corresponding densities of liquid water and water vapor are 0.958 kg/L and 0.000598 kg/L, respectively. Calculate the change of pressure for a one degree change in temperature.
an automobile gasoline tank holds 42 kilograms of gasoline. when the gasoline burns 147 kilograms of oxygen are
bac is often reported in weight-volume percent wv. for example a bac of 0.08 corresponds to 0.08 g ch3ch2oh per 100 ml
The Ksp of cadmium hydroxide, Cd(OH)2, is 7.20 × 10-15. Calculate the molar solubility of this compound.
Ethers react with HI to form two cleavage products. One of the products might react further with HI. In the first box below draw the two major products that could be recovered after treatment with one equivalent of HI
Calculate the number of liters occupied at STP: a. 1.7 mol H2(g); b. 1.8 x 10-2 mol N2(g); c. 2.5 x 10(2) mol O2(g)
how does the hammonds postulate explain?a. the greater selectivity for bromination vs. chlorination of an alkane?b. the
a 100.0 ml sample of acetic acid solution of unknown molarity is titrated with 0.15 m naoh solution. the titration
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