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suppose you dispense water from a buret into a flask as described in this experiment. The initial and final buret reading are 0.05 ML and 19.46 ML resctively and the flask is observed to weigh 48.0017 g when empty and 66.8101 g after the water sample has been dispensed into it The temperature of the water is 22 degrees celseus. calculate the apparent volume of the water dispensed and the actual volume of the water dispensed as well as the % error
A buffer solution is prepared by adding 15.00 g of sodium acetate ( NaC2H3O2) and 12.50 g of acetic acid to enough water to make 500 mL of solution.
The ionization energy of H is 13.6 eV. Explain what is the difference in energy between the n = 1 and n = 6 levels
Calculate delta s for reversibly heating 2.000mol of liquid water from 0.00C to 100.00C at a constant pressure of 1.00atm. the specific heat capacity of liquid water is nearly constant and is equal to 1.00cal/kgm or 4.18j/kgm
Explain why is it necessary to add an acid catalyst such as HCl or sulfuric acid while there is already a carboxylic acid present
use the factor label method to determine what quantity of 5.00x10 -3 M EDTA would be needed to mtitrate ml of water containing .0124 g of calcium carbonate
What is the molarity and osmolarity of a 1 liter solution with .2 moles of calcium chloride. How many molecules of chloride are dissolved in solution
Choose the strongest interparticle force in this substance. Kr a. dipole-dipole b. dispersion c. H-bonding d. ionic bonds e. dipole-induced diploe
Given the following thermochemical equation compute the heat involved in decomposing 12.5 g of water to the elements. 2H2(g) +O2(g) → 2H2O(l)ΔH°= -571.6 kJ
Calculate the molarity of an aqueous NaOH solution if 30.10ml of .500M H2SO4 is required to reach the end point when titrated against 10.00mL of NaOH solution.
If 100g of iron were reacted with 100g of oxygen according to the reaction below, the maximum yield in grams of Fe2O3 would be. 4 Fe(s) + 3 O2(g) >> 2 Fe2O3(s)
Calculate the entropy of unfolding of lysozyme at 25 oC, given that the difference in PCof unfolding is 6.28 kJ/mol/K at both 25 oC and 75 oC. Hint: consider a path of 25 oC (folded)?75.5 oC(folded) ?75.5 oC(unfolded) ?25 oC(unfolded).
Draw a reasonable Lewis structure for POCl3. Assign formal charges for the atoms in your Lewis structure. Draw a second legitimate resonance contributor for POCl3
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