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Suppose you prepare a 500 ml of .10 M solution aqueous solution of some salt and let it sit out uncovered and some water evaporates. What happens to the concentration of salt?
Why is toxicity diminished in other congeners where chlorines are removed from the 2,3,7,8 positions, or when chlorines are added to remaining positions on the rings?
A 10.1 g sample of CaCl2 is dissolved in 119 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C·..
An aqueous solution of lead nitrate, Pb(NO3)2, is mixed with one of sodium cromate, Na2CrO4, resulting in the formation of a percipitate of lead chromate.
what would happen to the pressure of a confined gas sample if the volume of that sample was decreased while the
What Mass of K2CO3 must you add to 125 grams of water to prepare a 0.200m K2CO3? What is the mole fraction of K2CO3 in the resulting solution?
what is the molarity of a solution prepared by combining 125ml of 0.251 molar hcl with 250ml of pure
Calculate the molar mass (in units of g/mol) of the solute . Kf of water is 1.86 C/m?
Write the name of the enzyme used in PCR and discuss its origin and properties that make it a suitable enzymes for the amplification reaction
the vapor pressure of nitrogen at several different temperatures is shown below.temperature pressure 65 130.570 289.575
The molecular weight of X is 65.0 g/mol. The heat required to melt one mole of the solid phase is 20.0 kJ, the heat required to sublime one mole of the solid phase is 40.0 kJ, and the heat required to vaporize one mole of the liquid phase is 30.0 ..
In an electrolysis cell similar to the one employed in this experiment, a student observed that his unknown metal anode lost 0.238 g while a total volume of 84.90 mL of H2 was being produced.
als hclaq alcl3aq h2gwhat mass of hydrogen can be produced from 2.90 g of aluminum and 14.0 g of hcl in the above
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