Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
When 1.50 g of butanol (C4H9OH) is burned in the same calorimeter, the temperature increases by 13.00 oC. An electrical heater is used to add 19.25 kJ of heat to a constant-volume calorimeter.
The refractive index and boiling point of an unknown liquid were calculated in a lab where the ambient pressure and temperature were 22 degrees Celsius and 700 torr respectively.
Calculate the work required to compress the gas isothermally to a volume of 1.5L at constant pressure of 2bar, followed by another isothermal compression to 0.8L at constant pressure of 3.75bar
How can determine the work need to compress an ideal gas where the volume=2.25L, pressure=1.33 bar, isothermally and reversibly from the 2.25L to 0.8L
Estimate how many photons at 660 nm must be absorbed to melt the 5.0 x 10 x10 g of ice? On average, determine the numbers of H2O molecules doe's one photon convert from ice to water?
When 1.50 g of methanol (CH3OH) is burned in the same calorimeter, the temperature increases by 8.75 oC, an electrical heater is used to add 20.50 kJ of heat to a constant-volume calorimeter.
Estimate the quantity of heating needed to convert the water in four ice cubes (60.1 g each) from H2O(s) at0o C to H2O(g) at 100oC. The enthalpy of fusion of ice at 0o C is 333 J/g a
Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2energy level. Ionization energy is defined as the minimum energy required removing an electron from the g
An unknown compound composed only of phosphorous and fluorine was analyzed to estimate its chemical formula in the following way: 0.2324 g of solid compound was placed in a 378-mL rigid vessel.
An Aqueous solution of barium (II) nitrate is mixed with aqueous ammonium sulfate to form the solid barium (II) sulfate and the aqueous ammonium nitrate.
What is the molarity of the permanganate solution when a solution of KMnO4 is standardized against sodium oxalate (fw=134.00 g) as a primary standard. 0.2121 g of this primary standard requ
Stearic acid (C18H36O2) is a typical fatty acid, a molecule with a long hydrocarbon chain and an organic acid group (COOH) at the end.
Explain what factor favors the reaction at the primary carbon, and what factor favors the reaction at the tertiary carbon." "1-Chloro-3-methyl-2-butene reacts with ethanol in a Sn1 fashion to yield
Explain how much is the weight of Na2CO3 in the unknown when .7316g of an unknown carbonate (contains K2CO3 and Na2CO3) is dissolved and diluted to 100mL. 25mL of this solution is titrated
What is the concentration of the silver nitrate solution when 10.00 mL of silver nitrate solution is titrated to the equivalence point with 8.50 mL of a 0.1100 M HCL solution.
Suppose you react this mixture with an excess of oxygen to form 5.779g of Fe2O3. Consider a 5.43g mixture of FeO and Fe3O4. Determine the percent by mass of FeO in the original mixture.
The molal freezing point depression constant of benzene Kf= 5.09oCkg/mole. Benzene, C6H6, a common non-polar organic solvent, is neither acidic nor basic, and can neither donate nor accept hydrogen bo
What is the molar heat of combustion of caffeine (in kJ) when a 1.09-g sample of caffeine C8H10N4O2 burns in a constant-volume calorimeter that has a heat capacity of 7.85kJ/K. The temperature
Find out the functions of NADH and ATP in the cells? Determine the numbers of ATP and NADH can baker yeast form from each mole of glucose through the glycolysis pathway (glucose to ethanol) with and
Explain why the calcium hydroxide is not soluble in water, but is readily soluble in an acidic solution and also include a chemical equation that accounts for this solubility.
Determine the molar mass (in grams/mol) of the unknown gas. An effusion container is filled with 7 L of an unknown gas, and it takes 90 s for the gas to effuse into a vacuum.
Assume your laboratory instructor in advertently gave you a sample of KHP contaminated with NaCl to standardize your NaOH. Explain how would this affect the molarity you measured for your NaOH solu
Explain what mass of water produces from the reaction of 1.66 L of oxygen gas and 2.69L of hydrogen gas? Both gases are at the 727torr and 11.5 oC.
At 10.24 atm a 4.40 L sample of neon is added to a 11.0L cylinder that contains argon. If the pressure in the cylinder is 7.42 atm after the neon is added, discuss what was the original pressure (i
If the pressure increases to 800. torr, determine the numbers of moles of gas were added to the container? Assume a constant-volume container. A gas sample containing 1.5 mol at 25 degrees Celsius e