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a) When 0.800 g of Ca metal is added to 200-mL of 0.500 M HCl (aq), a temperature increase of 13.0 degrees Celsius is observed. What is the qreaction for the reaction of Ca(s) + 2H+(aq)?
b) Calculate the ΔHrxn (kJ/mole Ca) at room temperature for the reaction.
Typical rate of deposit of dust (dustfall) from unpolluted air was reported as 10 tons per square mile per month. Express this dustfall in milligrams per square meter per hour.
Important information about Quant problems, Calculate pFe2+ at Ve in the titration of 25.00 mL of 0.02026 M EDTA by 0.03855 M Fe2+ at pH
The isoelectric point (pI) of a peptide is the pH at which the peptide does not migrate in an electric field. Since the peptide is zwitterionic, there are the same number of positive charges as negative charges on the peptide population.
The lab is synthesis of Methyl Benzoate. The question is besides fischer sterification Name three other ways to make esters.
assuming that the gas behaes ideally. Then repeat the calculation by using the van der Waals equation
How many grams of titanium tetrachloride can be produced?
A balloon is filled to a volume of 2.0 102 mL at a temperature of 31.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 102 K. What is the final volume of the balloon?
The two products formed are 2-methyl-1-hexene (19%) and 2-methyl-2-hexene (81%). Show the chemical equation for this reaction. Explain fully why 2-methyl-2-hexene is the major product.
How much forested land would be needed to produce all of the given country's power? (Assume that the given country has little fossil resources.) Is this a sustainable alternative?
Calculate approximately the heat released when you are given a chemical equation as 2-methyl-1-propene CH 3 ) 2 C CH 2 reacts
Relationship between refractive index and mole fraction, How can you use refractive indices to calculate weight % composition of a distillate and its residue? How can you convert the weight % composition to mole fractions?
solution of a weak monoprotic acid, pKa 2.346, is mixed with 37.3 ml of 0.0832M sodium hydroxide. What is the pH of the resulting not a simple buffer solution?
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