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The element magnesium has 3 isotopes with the masses and natural abundances shown in the table. Mass of Isotope Natural abundance 23.98504 78.99 24.98584 10.00 25.98259 11.01 What is the average atomic mass of magnesium?
A smple of mixture of NaCl, Caco3 and SiO2 weighed 7.30 grams. During the water wash the sample lost 2.21 grams. After treatment with HCL, the sample weighed 2.05 grams.
a car radiator coolant, loses 999J of heat. What was the initial temperature of the ethylene glycol if the final temp is 32.5 degrees C
choloine atom is more electronegative than carbon so there is a bond dipole alon the Cl-C bond why then is tetrachloromethane
if you burn 51.8 g of hydrogen and produce 463g of water, how much oxygen reacted?
An open-end manometer containing mercury is connected to a container of gas. The mercury in the arm attached to the gas is 13.6cm higher than the one open to the atmosphere.
Present-day carbon (in living matter) gives 15.3 disintegrations per minutes per gram of total carbon. Determine the date of the volcanic eruption. Recall that the half-life of carbon-14 is 5730 y.
What is the pressure in millimeters of mercury of 0.0100 mol of helium gas with a volume of 211 mL at a temperature of 50^circ C?
For the reaction A + B C, the rate constant at 215 degrees C is 5.0 X 10^-3 and the rate constant at 452 degrees C is 1.2 X 10^-1 a) What is the activation energy in kJ/mol?
Determine the Boyle temperature for a gas with the equation of state: PVm=RT(1+(P/Pc)(Tc/T)*8/57*(1-4(T/Tc)^2)).
Draw the structure of any D-ketoheptose in the open chain form, and answer the following questions (you must use either Haworth projection or chair conformation in each of the points below)
what product would be obtained if acetaminophen were hydrolyzed in acidic aqueous solution?
Provide analysis of the IR spectrum in terms of product absorbances and similarities/differences from the IR spectra of 4-iodophenol and phenylboronic acid.
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