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Write the balanced equation, then outline the steps necessary to determine the information requested in each of the following
a) the number of moles and the mass of Mg required to react with 5.00 g of HCl and produce MgCl2 and H2
b) the number of moles and the mass of oxygen formed by the decomposition of 1.252 g of silver(I) oxide.
c) the number of moles and the mass of magnesium carbonate, MgCO3, required to produce 283g of carbon dioxide. (MgO is the other product)
d) the number of moles and the mass of water formed by the combustion of 20.0 kg of acetylene, C2H2, in an excess of oxygen
e) the number of moles and the mass of barium peroxide, BaO2, needed to produce 2.500 kg of barium oxide, BaO (O2 is the other product)
Use the van der Waals equation to calculate the pressure, in atm, of 37.83 mol of hydrogen at 113 oC in a 2.7 L container.
At the begining of the titration being performed in this lab experiement, how do you determine how much naoh should be added at each interval between volume-pH readings? As you approach the equivalence point,
a sample of gas is collected over water at a temperature of 35 c when the barometric pressure reading is 742 torr. what
Question- By measuring the osmotic pressure of a polymer solution one can determine the average molecular weight of a polymer. A 0.1455 g sample of polystyrene was dissolved in chloroform using a 10 mL volumetric flask.
Will this solution deviate positively from, deviate negatively from, or ideally follow Raoult's law
which of the following are oxidation reduction reactions? a)Ca(s)+F2(g)>CaF2(s) b)Fe(s)+2HCl(aq)>FeCl2(aq)+H2(g) c)2NaCl(aq)+Pb(NO3)2(aq)>PbCl2(s)+2NaNO3(aq) d)2CuCl(aq)>Cu(s)+CuCl2(aq)
a) what is the new volume if 0.500 mol of O2 gas is added? b) Oxygen is released until the volume is 10.0 L. How many moles of O2 are removed? c) What is the volume after 4.00 g of He is added to the 4.80 g of O2 gas in the container
Looking at the effect of ionic strength on activity coefficients, why would the initial slope for Ca2+ be steeper than that of K+
A sample of 10mL of a solution of KBr has a mass pf 12.60g. While the solution is evaporated, the residue weighs 3.80g. With this data determine:
a mixture of immiscible liquids both water-insoluble is subjected to steam distillation. at 90 degrees c the vapor
Write chemical equations for the reaction of fluorine with the following substances, making sure that the numbers and kinds of atoms are the same on both sides of the equations. If no reaction occurs, write noreaction
The H2O molecules above and below the equatorial plane are more loosely bound. For convenience this ion is often written as Cu^2+(aq) Addition of NaOH to the Cu^2+ (aq) solution causes a precipitate of Cu(OH)2. write a balanced equation regarding ..
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