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For each reaction shown here, predict whether the equilibrium lies predominantly to the left or to the right. Briefly explain your prediction.
(a) [NH4]+(aq) + Br-(aq) NH3(aq) + HBr(aq)(b) [NH2]-(aq) + H2O(l) NH3(aq) + OH-(aq)
Calculate the mass of CuS produced and the concentration of H+ ion produced by bubbling H2S into 1.00 L of 0.10 M CuCl2 (aq) solution. The net ionic equation is:
What is the pKb for the acetylsalicylate (C9H7O4-) ion in a 0.10 M solution of sodium acetylsalicylate (NaC9H7O4). A. 3.52 B. 10.48 C. 3.0 x 10-4 D. 3.0 x 10-11 E. 8.26
write the net ionic equation, excess concentrated sulfuric acid is added to solid calcium phosphate
Estimates show that the total energy output of the sun is 5X10^26 J/s. What is the corresponding loss in Kg/s of the sun in scientific notation
If the ratio [HbCO]/[HbO2] comes close to 1, death will happen. What partial pressure of CO is fatal. Assume the partial pressure of O2 is 0.20 atm (since air is 20% O2).
What is the molarity of the Na 2 S 2 O 3 solution if a 0.150 g sample of KIO 3 required 10.7 mL of Na 2 S 2 O 3 solution for its standardization?
1. How many CO2 molecules are needed to produce 1 glucose molecule (in photosynthesis)? 2. How many moles of oxygen atoms are in 1 mole of calcium phosphate?
3M hydrochloric acid and 3cm strip of magnesium ribbon. 3cm strip of magnesium ribbon and 2mL of 0.10 M silver nitrate
What is the net redox reaction that occurs when Pt comes into contact with acidic KMnO4
What volume of 0.1 M KMnO4 would be required to titrate 0.56 g of K2[Cu(C2O4)2] • 2H2O?
Rubidium has two stable isotopes, 85Rb and 87Rb. The 87Rb isotope has a natural abundance of 27.83% and an atomic mass of 86.909183 amu. Calculate the percent abundance and atomic mass of the 85Rb isotope.
the NERNST equation is used to predict the impact of concentration on the cell potential. What value of slope does the Nernst equation predict for a plot of Ecell vs. log(cu2+ conc ratio)
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