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Propose a rationale for the lack of reactivity of esters toward sodium borohydride. Propose a rationale for the greater reactivity of lithium aluminum hydride over that of sodium borohydride
1.) Half reactions: What is the oxidation and reduction for the following formula: 3 Mg + N2 → Mg3N2
How many grams of sodium sulfide are formed if 1.60 of hydrogen sulfide is bubbled into a solution containing 2.13 of sodium hydroxide, assuming that the sodium sulfide is made in 93.0 yield?
If you ingest a vitamin C tablet containing 1.27 x 1022 carbon atoms, what was the mass, in milligrams, of the tablet, assuming that the tablet is 100% pure?
No crystals form on cooling, and so the student pours out the solution and starts the experiment over. Have the carbon, hydrogen, nitrogen and oxygen atoms of the acetaminophen been destroyed? If so
A student sets up two reactions. Reaction 1 uses 0.190 mol/L of reactant, and Reaction 2 uses 0.470 mol/L of reactant. How many times faster is Reaction 2 compared to Reaction 1?
When 0.060 mol of propionic acid, C2H5CO2H, is dissolved in 500 ml of water, the equilibrium concentration of H3O+ ions is measured to be 2.41 x 10-3 M. What is Ka for this acid?
A 31.0-g sample of water at 290. K is mixed with 48.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Suppose the thermometer is miscalibrated to read .3 degrees C higher than actual. what effect does this error in calibration have on the general molar mass of the compound, explain.
Use the wattage of the lightbulb and the time it is on to calculate in joules (assume that the cylinder and lightbulb assembly is the system and assume two significant figures).
The initial temperature of the calorimeter contents is 21.81°C. A 1.132 g sample of benzoic acid (ΔEcomb = -26.42 kJ/g) is combusted in the calorimeter. What is the final temperature of th
a gas has a volume of 10 L at 0 degrees C. What is the final temperature of the gas in C if its volume increases to 27 L? Assume that amount of the gas and its pressure remain unchanged.
Magnesium has three naturally occurring isotopes, 24Mg (isotopic mass = 23.9850 amu, abundance 78.99%), 25Mg (isotopic mass = 24.9858 amu, abundance 10.00%), and 26Mg (isotopic mass = 25.9826 amu, a
The mass of the flask is measured when the outside of the flask is wet. Will the mass of the vapor in the flask be reported to high or too low or unaffected, explain
A helium balloon lifts off at 1.0 atm and 25 °C with a volume of 1.5 x 103 L. At an altitude of 21 km the temperature is -50 °C and the atmospheric pressure is 76.0 mm Hg. What is the volum
Determine the gram formula mass of the compound KMnO4
Use Charles's law to calculate the volume the gas will occupy if the temperature is increased to 159°C while the pressure is held constant.
At what m/z values would you expect to observe the three most abundant peaks for the molecular ions and what would you expect to be their relative abundances.
Elemental exonium (not a real element) consists of two major isotopes, What is the atomic weight for exonium? Answer in units of amu
A zero-order reaction has a constant rate of 1.90×10-4 . If after 40.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration?
What is the formula of the compound formed between strontium ions and nitrogen ions?A) SrNB) Sr3N2C) Sr2N3D) SrN2E) SrN3
Octane gas reacts wuth oxygen to form carbon dioxide gas and water as a gas. write balanced equation. how many grams of oxygen must react with 50 grams of hexane gas?
suppose the flame on a gas burner emits light just like a blackbody. The flame appears blue, emitting most of its light at a wavelength of 475 nanometers. What is the temperature of the flame?
14.0 moles of gas are in a 6.00 tank at 22.6. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are and .
Describe the importane of chemical elements to living organisms