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What volume of hydrogen gas is produced when 68.4 g of iron reacts completely according to the following reaction at 25 C and 1 atm?
iron (s) + hydrochloric acid (aq)--------- iron(II) chloride (aq) + hydrogen (g)
If 5.50 of the unknown compound contained 0.183 of and 0.367 of , how many moles of oxygen, , were in the sample.
Calculate the pH of a solution formed by mixing 65-mL of 0.22M NaHCO3 with 75-mL of 0.15M Na2CO3.
Once the system has reached equilibrium, 5.00 g of NO2 is injected into the vessel, and the system is allowed to equilibrate once again. Calculate the mass of NO2 in the final equilibrium mixture.
What volume of .100 M NaCl is needed to react completely with 5.00mL of .200 M Pb(NO3)2.
what is the percent by mass of a solution on made by dissolving 163 grams of table sugar in 755 grams of water.
we place an excess ( more than can dissolve) of PbCl2 into 100 ml. of water and find that at equilibrium [Cl]=0.032 M . Calculate kc for the following reaction : PbCl2 = Pb+2Cl
The freezing point of t-butanol is 25.50C and Kf is 9.1C kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a 10.0g sample of t-butanol is 24.59C. How many grams of water are present in the sample?
Four samples of gas - O2, CO2, Ar, and He - are available at the same temperature. Rank the gases in increasing order of their particles' average velocity, beginning with the slowest.
The object ofthis problem is to determine V40, the required volume ofthe 40% mixture. Calculate V40 and do a degree-of-freedom analysis.
grams of a sulfate-containing unknown with excess barium chloride. If 0.6500 grams of barium sulfate is produced, what is the percentage sulfate in the unknown?
Why must the distillation head temperature be maintained below 45?C during the cracking of dicyclopentadiene?
Identify the type of interactions involved in each of the following processes taking place during the dissolution of sodium chloride in water. -Interactions between water molecules
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