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A sample of commercial concentrated hydrochloric acid is 11.8 M HCl and has a density of 1.190 g/mL. Calculate (a) the mass percentage, (b) molality and (c) mole fraction of HCl in concentrated hydrochloric acid.
Molar Mass(HCl) = 36.46 g/mol
Assuming that the appropriate volumetric flasks are available, describe how we would make these solutions: (a)175 mL of a 1.14 M solution of NH4Br in water (b)1.35 L of a 0.825 M solution of NaI in water
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Assuming that the copper and lead are pure, determine the relative amounts of each kind of BB. A bag contains a mixture of copper and lead BBs
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Calculate the molecular weight of this gas if A sample of gas weighs 0.250 g and occupies a volume of 112 cm3 at STP?
Cadmium ion in solution is analyzed by precipitation as the sulfide, a yellow compound used as a pigment in everything from artists' oil paints to glass and rubber. Calculate the molar solubility of cadmium sulfide at 25?C ?
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calculate the number of PCl3 molecules formed when 97 P4 molecules and 606 Cl2 molecules react?
Suppose that all 175 L of liquid nitrogen in a tank accidentally vaporized in lab that measured 10.00 m X 10.00 m X 2.50 m. What maximum fraction of the air in the room is displaced by the gaseous nitrogen?
How many joules of heat are required to heat 167 g of aluminum from 34.0 oC to 66.5oC?
The half-life of cobalt-60 is 5.27 years. How many milligrams of cobalt-60 remain after 52.7 years if you start with 10.0 mg.
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