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You add 100.0g of water at 55.0C to 100.0g of ice at 0.00C. Some of the ice melts and cools the water to 0.00C. When thermal equilibrium is established at 0.00C, what mass of ice has melted?
Delta H of fusion for water is 333 J/g.
SO2Cl2 decomposes to SO2 and Cl2 All are gases. .0260 moles of SO2Cl2 are introduced in 1 L bulb at 375K When system reaches equilibrium total pressure in bulb is 1.43 atm. Calculate partial pressures of each gas.
Presume you inserted a piece of an unknown metal into a solution of zinc (II) nitrate and observed no reaction. After that if you inserted the unknown piece of the metal into the solution of iron (III) chloride a deposit formed on the bottom of th..
A 100 mL buffer solution initially has 1.00 M HClO (Ka = 3.0 × 10-8) and 0.75 M NaClO. What is the new pH when this 100 mL of 0.10 M NaOH is added to the initial buffer solution?
A formate buffer (pka = 3.75) is prepared by mixing 50 mL of a 4 M formic acid and 2 g of solid sodium hydroxide (MW= 40g/mol) in total volume of 1.0 L. A peptide with the amino acid sequence C-P=T-Y-R-L-D-Q (MW = 995.12 g/mol) is dissolved in thi..
The equivalence point is reached after addition of 25.0 ml Naoh a) calculate the ionication ka for the acid HA
A sample containing 4.80 g of O2 gas has a volume of 15.0 L. Pressure and temperature remain constant. What is the new volume if 0.500 moles of O2 gas is added?
acetic anhydride C4H603 to form aspirin C9H8O4 and acetic acid CH3C00H. What mass of acetic anhydride did the student use? What is the limiting reactant?
You are asked to prepare a standard solution of 10.0 mM of serine at pH 6.34 for a biochemistry experiment. The pI of serine is 5.68. What percentage of the serine in the solution is present as the anion
What is the enthalpy change when a 4.0 gram sample of aluminum burns in excess of oxygen to form aluminum oxide?
The Ksp of magnesium carbonate is 4.0x10-5. write balanced chemical equations and Ksp expressions for each of the salts as part of your solution
Element X has two isotopes- X - 100 and X 104. If the atomic mass of X is 101 amu, Explain what is the relative abundance of each isotope in nature
A tank containing carbon dioxide at 400K and 50 bar is vented until the temperature in the tank falls to 300K. Assuming there is no heat transfer between the gas and the tank
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