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What is the pH of a buffer that is 0.50 M NH3 (pKb = 4.75) and 0.20 M NH4Cl after 50 mL of 0.2 M HCl is added to the 1 L solution.?
How long (in hours) would this current have to be applied to plate out 8.90 g of nickel?
Why must the distillation head temperature be maintained below 45?C during the cracking of dicyclopentadiene?
Which solution should be the most acidic? 1) Zn(NO3)2(aq) 2) Cd(NO3)2(aq) 3) Ga(NO3)3 (aq) 4) Hg(NO3)2(aq) 5) Al(NO3)3(aq)
if a total of 702 mol of NaHCO3 and 2.4 mol of C6H8O7 react, how many moles of CO2 and Na3C6H5O7 will be produced?
A 0.08468 g sample of gas occupies 10.0-mL at 291.0 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound
A voltaic cell is constructed by immersing a strip of silver metal in a 1.0 M AgNO3 solution and a strip of cadmium metal in a 1.0 Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way.
which of the following is a neutralization reaction?a. kcl nano3 --gt kno3 naclb. hno3 koh --gt h2o kno3c. h2o so3
Calculate the fraction of space that is occupied by packing spheres in the (a) simple cubic, (b) body-centered cubic, (c) face-centered cubic (close packed) structures
The Ksp of AgCl is 1.6 x 10-10. What is the solubility of AgCl in 0.010 M AgNO3? Give your answer using scientific notation and to 2 significant figures
What is the percent yield in a reaction between 53.6 g O2 and 51.6 g Al if 87.3 g of Al2O3 is produced
The volume of a unit cell of diamond is .9454 nm^3 and the density of diamond is 3.52 g/cm^3. find the number of carbon atoms in the unit cell of diamond
The value of delta H for 2CO(g) + O2 (g) = 2CO2(g) is -482 kJ. Calculate the heat released to the surroundings when 38.5 g of O2 (g) reacts with excess CO
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