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Fill in the lines for the orbital/arrow diagram for the valence electrons of the Dyprosium atom, including labeling the n, l and ml values and the individual orbitals that are known?
50mL of .250M sodium benzoate, NaC7H5O2, is being titrated by .200M HBr. Calculate the pH of the solution
Explain (using chemical equations) why NaOCl (bleach) is not terribly effective at killing bacteria in pools or tubs where the water has become acidic over time.
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
Considering the following equation, how many moles of water will be made by fully reacting 12 moles of NH3?
A buffer, consisting of H2PO4- and HPO42-, helps control the pH of physiological fluids. Many carbonated soft drinks also use this buffer system.
Draw both extended and Fischer representation of each of these compounds.
what change in the number of moles of Ag occurs in the system? (2)what change in the concentration of Ag occurs in the system?
a student pumped some helium gas into a balloon. when this balloon was connected to an open ended U-tube containing some oil (density=9.18 g cm-3 the oil was displaced 112 mm towards the atmosphere. what is the pressure of the helium inside this b..
what is the mass in milligrams of ink in a droplet from this printer? Is ?milligrams? an appropriate unit for describing this mass?
You prepare a suspension by dispersing 20.0 g solid compound with the aqueous dispersant (outer phase of the suspension) to a final volume of 100.0 ml. The dispersant contains 10% w/v glycerol and 0.5% w/v polysorbate 80. The density of the solid ..
A sample of N2 gas occupies 2.40 L at 20oC. If the gas is in a container that can contract or expand at constant pressure, at what temperature will the N2 occupy 4.80 L
Basic Copper Carbonate contains 57.84% copper and 5.43% carbon by mass. What mass of copper in grams is contained in 7.061 kg of basic copper carbonate
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