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How do you predict which three of the following five aqueous solutions should react with soilid aluminum metal:
AgNO3,
Na2CO3,
CucL2,
Pb(NO3)2.
Combustion of propane in the presence of oxygen yields carbon dioxide and water. The unbalanced equation is: C3H8 (g) + O2 (g) image from custom entry tool CO2 (g) + H2O (g)
What volume of H2 gas (in L ), measured at 742 mmHg and 84C, is required to synthesize 25.8g of CH3OH ?
Copper exists as two isotopes ^63Cu (62.9298u) as well as ^65Cu (64.9278 u). Explain what is the approximate percentage of 63Cu (62.9298 u) in samples of this element
Consider the titration of a 25.0 mL sample of 0.100 M HC2H3O using 0.100 M NaOH as the titrant. Ka=1.8 x 10^ -5. Calculate the pH of the analyte after 10.00 mL of 0.100 M NaOH has been added. Use the Henderson-Hasselbalch equation.
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 mass of Al (26.89 amu) is consumed when 800. kJ of heat are released by the following reaction? 2Al(s) + Fe2O3(s) -> 2Fe(s) + Al2O3(s) deltaH = -850. kJ
The second virial coefficient B and the third virial coefficient C for A are -0.021 L/mol and 0.0012 L^2/mol^2 at 273 K respectively. By what percentage does the compressibility change
How much Tris (molecular mass 121.14 g/mol) is required to react with 35 mL of 0.10 M HCl
Explain a solution with a volume of 75.0 mL contains 15.5 mmol HCHO2 and 8.50 mmol NaCHO2. Explain what is the pH of this solution
what will the final mixture contain if 14.0 g of N2 and 35.5 g of Cl2 react to completion and the balanced equation is: N2+3Cl2--->2NCl3
Suppose that while titrating a vinegar sample with standard NaOH you misread the buret and the calculated NaOH volume is greater than the actual volume used. How will this error influnence the final calculated percentage of acetic acid in the vinegar..
How much limestone must be decomposed by heating to produce 250.0 grams of lime, CaO?assuming that the limestone contains 95.0% pure CaCO3.
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