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If a student weighed a copper wire that was significantly larger than the size recommended in the procedure.
Explain how would prepare 2.5 mL. of a solution with an equal pAg from 7.5 to AgNO3 and Ag2SO4. Remember that the pAg will serve to determine the concentration of Ag + in solution.
If a reaction mixture contains only N2O and NO2 at partial pressures of 1.0 atm each, the reaction will be spontaneous until some NO forms in the mixture.
a 70g piece of ice at 0c is added to a sample of water at 8c, all of the ice melts and the temp of the water decreases to 0c, how many grams of water were in the sample?
H ow many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.11 g/mol. 4 KNO3(s) ? 2 K2O(s) + 2 N2(g) + 5 O2(g)
what would be the proper sequence for the following compounds to be listed from highest melting point to least?
Type the electron configuration for the following ions according to the rules in your text. Use the format {He} 2s2 2p2 for carbon. Pay attention to the spaces.
two aqueous sulfuric acid solutions containing 20.0 wt h2so4 sg1.139 and 60.0 wt h2so4 sg1.498 are mixed to form a 4.00
You have a certified "5 ppm Fe standard" that you obtained from NIST. By your method you measured it to be 4.8 ppm. Discuss your measurement precision
how many grams of cano32 can be produced by reacting excess hno3 with 7.40 g of caoh2?a 32.8 gb 8.22 gc 10.2 gd 16.4 ge
Calculate the volume (in mL) of a 0.680 M KOH solution that should be added to 4.000 g of HEPES (MW=238.306 g/mol, pKa = 7.56)
The molar heat capacity of Cu(s) at 1 atm pressure has been measured over a range of temperatures from close to 0 K to 400 K. Describe how you would obtain the standard molar entropy of Cu(s) at 298 K.
Sodium formate, HCOONa, is a weak base and undergoes hydrolysis in water. Determine the OH- concentration at equilibrium in a solution
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