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Scoring Scheme: 3-3-2-1 Part V. The heat gained by the ice melted the ice and raised the temperature of the melted ice from its initial temperature to the final temperature of the water in the calorimeter. Use this information to calculate the heat of fusion per gram of ice for each trial. Enter your values using the correct number of significant figures. This may be 2 or 3 digits. Trial # qwater qcalorimeter Tf Initial Masswater Masswater & ice ΔHfus #1: -11450. -2139. 15.6 80.720 123.56 #2: -14640. -2732. 22.0 80.790 121.60 #3: -13960. -2625. 3.90 80.190 132.43
A 2.0 milliliter sample of KOH solution is neutralized by 4.0 milliliters of a 3.0 M HCl solution. What is the concentration of the KOH solution
Acetic acid is added to water until the ph reaches. What is the total concentration of the added acetic acid.
Solve an equilibrium problem (using an ICE table) to calculate the pH of a solution that is 0.185 M in HC2H3O2 and 0.120 M in KC2H3O2
In a first order decomposition in which the rate constant is 0.00830 sec-1, how long will it take (in minutes) until 0.309 mol/L of the compound is left, if there was 0.517 mol/L at the start
suppose that we have a mixture of n2 g and o2 g of unknown composition whose total pressure is 385 torr. if all the
If Titration of 30 mL sample of acetic acid is performed by dropwise addition of 0.68 M NaOH. A total of 8.79 mL of the base is necessary to reach the equivalence point. Explain what was the original concentration of acetic acid before the titrati..
Describe how a phospholipid differs from other fatty acids. How does this difference allow the formation of a bilayer in an aqueous medium
what is the half-life of a compound if 87 percent of a given sample of the compound decomposes in 65 min? assume
Discuss how one could tell the difference between first order, second order and zero order reactions by graphing the reactant concentration in some way vs time.
To 333 milliliters of a 0.120 molar Pb(NO3)2 solution, 0.667 milliliteres of 0.435 molar KIO3 is added. Calculate the concentrations of Pb+2 and IO3- in the solution at equilibrium.
How many moles of O2 would be required to react with 0.850 moles of CS2 in CS2(l) + O2(g) CO2(g) + SO2(g)?
A sample of unknown hydrate of FeCl3 weighs 8.693g. After heating the sample to constant mass, the remaining anhydrous salt weighs 5.216g. What is the experimental formula for the hydrate
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