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1.) How many formula units are in 1 mole of (NH4)2SO4?
2.) How many moles are in 8.5 x 1026 molecules of CO2?
3.) How many grams are in 6.51 moles of H2SO4?
4.) How many moles are in 2.56 x 10-4 grams of Fe2O3?
A 0.160-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
What pH is needed to precipitate Ni(OH)2 so completely that the nickel concentration is less than 1.1 x 10-5 M (Ksp = 1.6 x 10-14)
Determine At what temperature will Kp 2.00? if it is given that Delta H = +57.2 kJ/mol,Kp = 0.113 at the temperature of 298 Kelvin?
Explain How to calculate initial moles of H2O2 assuming 3.00%wt/vol stock solution with 10.0mL of 0.10 M KI, 15.0 mL di H20, and 5.0 ml 3% H2O2
Question- 1.0.213g of an unknown monoprotic acid required 34.55mL of 0.1007M NaOH solution to reach a pink end point with phenolphthalein.
what mass of ccl2f2 substance must evaporate in order to freeze 135 g of water initially at 15 degrees celsius? the
Write a balanced chemical equation for the reaction of aqueous potassium phosphate with aqueous calcium bromide to produce aqueous potassium bromide and solid calcium phosphate. Then write the net ionic equation for this reaction.
Treating the atom as a cube, and assuming no empty space in the solid, estimate the length (in A) of an atom of B in alpha-rhombohedral boron using the data
a voltaic cell is constructed with a agag half-cell and a cdcd2 half-cell. the silver electrode is positive. write
question 1 biotechnology has allowed us to genetically modify corn with a gene that acts as a pesticide. what could be
source of carbon, show how to prepare a) cis-3-octene b) trans-3-octene
What is the expected pH of this solution. Estimate the free carbonate ion concentration in this solution. Estimate the concentration of carbonic acid in solution.
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