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Suppose you have a solution that might contain any or all of the following cations: Cu2+, Ag+, Ba2+, and Mn2+. The addition of HBr causes a precipitate to form. After the precipitate is filtered off, H2SO4 is added to the supernate, and another precipitate forms. This precipitate is filtedred off, and a solution of NaOH is added to the supnatant liquid until it is strongly alkaline. No precipitate is formed. Which ions are present in each of the precipitates. Which cations are not present in the original solution?
Nitrogen reacts with a metal to form a compound in which there are three atoms of the metal for each atom of nitrogen. If 1.486 g of the metal reacts with 1.000 g of nitrogen
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl. how many liters of H2 would be formed at 770 mm Hg and 16 degrees celcius if 26.5g of zinc was allowed to react
Draw all of the structural (constitutional) isomers for one of the alkanes and name each isomer for C10H22. I just need Six and I do not get this
You are asked to prepare a buffer with a pH of 9.8. Calculate the volumes of .1 M solutions of NH4Cl and NH3 needed to produce 200mL of the buffer
Explain briefly that how HCl could test for limestone's presence , use the balanced chemical equation for this and then describe specific reaction that takes place?
a 97 gram solution of silver nitrate contains 21 grams of AgNO3. what is the percent by mass of silver nitrate in this solution?
Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the reaction:
An aqueous solution of etanol, C2H5OH is 19% ethanol by mass and has density of 0.9700gml. Calculate the molality, molarity of the ethanol solution.
Calculate the molality, molarity and mol fraction of a 25.4% (by mass) aqueous solution of phosphoric acid (H3PO4). in one litre of solution.
A basketball is inflated to a pressure of 1.50 atm in a 20.0°C garage. What is the pressure of the basketball outside where the temperature is -5.00°C?
The rate of a chemical reaction can sometimes be determined by measuring the change in mass of the reaction flask and its contents with time
report the total heat needed and the heat needed for each individual step in the process.
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