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Ion-ion interactions in macromolecules are known to occur either inside or outside of the macromolecule. which of the two interactions is stronger and why
calculate the specific heat of a metallic element if 478 J of energy are needed to raise the temp. of a 82.73 g sample from 25.0 C to 50.0 C. what is the most likely identity of the element
An element X forms the oxalate complex X2C2O4 which is 7.91% C and 21.07 % O by mass. What is the identity of the Element X
What mass of potassium bromide residue remains if 500.0 mL of 0.200 M potassium bromide solution are evaporated to dryness.
Sodium bicarbonate is often used as an antacid to neutralize excess hydrochloric acid in an upset stomach. What mass of hydrochloric acid (in grams) can be neutralized by 2.3g of sodium bicarbonate?
How many moles of O2 are required for the complete reaction of 43.5 g of C2H4 to form CO2 and H2O
Consider the zinc atoms of ZnSe. With what pairs of atoms could the Zn be replaced to make another isoelectronic solid
The equilibrium constant Kc for the decomposition of phosgene, COCl2, is 4.63 10-3 at 527°C. COCl2(g) CO(g) + Cl2(g) Calculate the equilibrium partial pressure of all the components
What substance is produced at the anode during the electrolysis of a mixture of molten calcium bromide, CaBr2(l), and molten magnesium iodide,MgI2(l)
he maximum contaminant level (MCL) for barium (Ba) in drinking water is 2.0 mg/L. Barium can combine with sulfate (SO42-) to form BaSO4(s), which precipitates out of the water. This can be achieved by adding Na2SO4
Place the video camera on the center spotlight on the right and click the video camera to turn it on. Set the laser intensity to 1 nW and the wavelength to 20 nm. This wavelength is in the x-ray region of the electromagnetic spectrum. The purple d..
Draw two molecules that are diastereomers and calculate the energy of each. Then draw two molecules that are enantiomers and calculate the energy of each.
A piece of dry ice (solid carbon dioxide) with a mass of 28.5 g is allowed to sublime (convert from solid to gas) into a large balloon. Assuming that all of the carbon dioxide ends up in the balloon, what will be the volume of the balloon at a tem..
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