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A mass of mercury occupies .750L. What volume would an equal mass of ethanol occupy if mercury's density is 13.546 g/mL and the density of ethanol is .789 g/mL?
When a magnetic sector instrument was operated with an accelerating voltage of 2500 V, a magnetic field of 0.4 Tesla was required to focus on the CH4+ on the detector.
Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops
A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 ml. The mass of the water
The initial concentration of some weak acid, HA, in an aqueous solution is 0.2150 M, at equilibrium the concentration of HA becomes 0.0955 mol/L.
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.5 cm. Its mass is 1.2 kg. Calculate the density of the metal.
Trans-bis(ethylenediamine)dithiocyanatocopper(II) forms three linkage isomers. write each structural formulas and name each isomer.
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L?1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass o..
Two compounds of nitrogen tetroxide(N2O4) and hydrazine(N2H4) are used as rocket fuels.When the two are mixed,they ignite and produce nitrogen gas and water.
Write the correct equilibrium constant expression for each reaction and indicate its numerical value
This energy is called the work function of that metal. What is the longest wavelength of radiation (in nm) that could cause the photoelectric effect in each of the following metals
How much heat, in calories, does it take to warm 540 grams of water from 11.0 degrees Celsius to 37.0 degrees Celsius
Suppose that 1.41 g of impure barium hydroxide is dissolved in enough water to produce 177.1 mL of solution and that 44.1 mL of this solution is titrated to the stoichiometric point
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