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Explain an 0.6325 g sample containing Ba2+ and Ca2+ was precipitated to form BaC2O4*H2O and CaC2O4*H2O. Explain the oxalates were heated in a TGA leaving a residue of 0.5713 g in the range of 320-400°C and 0.4673 g in the range of 580-620°C. Compute the % Ca and Ba in the sample.
How many mL of 6.0M H2SO4 are required to react with .80g of CuO according to the equation CuO
State the balanced net equation for the reaction that takes place when 0.1 M solutions of lead (II) nitrate and lithium iodide are mixed.
the equilibrium constant kp for the decomposition of nitrogen dioxide is 4.48 10-13 at 250c. what is the kc for that
Naturally occurring gallium consists of two isotopes. one of those is 71Ga with an isotopic mass of 70.9247050 amu and an abundance of 39.892%. What is the mass number of the other isotope. How many atoms of phosphorous are in 4.60 mol of Copper(II..
what statement about alcohols, ethers, and amines is not correct? a- ethyl group is represented by C2H5 b- CH3 is known as methyl group c- there are primary, secondary, tertiary classifications for alcohols
Calculate the concentration of an aqueous solution of Ca(OH2)that has a pH of 12.57? Express your answer using two significant figures.
A solution of vinegar has a 0.81M the manufacturer claims that the vinegar has 5% acetic acid by weight. the denisty is 1g/ml is the manufacturer correct
Sulfurous acid, H2SO3, is a weak diprotic acid (pKa,1=1.89 and pKa,2=7.21 at 25oC). What is the pH of 0.121 mol/L H2SO3(aq) at 25oC
Establish the equilibrium K values for a distillation system to separate diisopropyl benzene from a mixture of heavy aromatics, the major component in the heavy aromatics is diphenyl propane. Other non key components are triisopropyl benzene, cume..
identify the two important classes of catalysts. analyze the chemical reactions that take place when a biological
1 for each of the following syntheses number of steps shown in brackets state what reagents you would use for each step
what is the symbol equation for incomplete combustion of ethane and what is the symbol equation for the complete
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