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Is 1s2 2s2 2p6 the symbol for a macroscopic property or a microscopic property of an element? Explain your answer?
Brookhaven National Laboratory (BNL) recently constructed the National SynchrotronLight Source II (NSLS-II), which provides the world's brightest coherent x-rays for studying materials and biological systems. Beamline 17-ID-2, the Macromolecular C..
how many grams of NaOH should be used to make 200 mL of a 0.24M solution of NaOH starting with a .400M HCL solution
The aspirin componet weighs only 250mg. What is the w/w% aspirin inthe time release tablet?
Calculate the molar mass of the unknown gas. Remember that the faster the rate of effusion, the shorter the time required for effusion; that is, rate and time are inversely proportional.
A sample of hard water contains 20mg of Ca++ ions per liter. Explain how many milliequivalents of Na2Co3 would be required to soften 1 liter of sample
determine the number of representative particles in each substancea. 250 mol of silverb. 8.56 x 10-3 mol of sodium
A 200 mL volume of 1.28 M Ba(NO3)2 is diluted with water to a volume of 2.00 L, calculate the molarity (M) of NO3- in the new solution. Molar Mass (g/mol) Ba(NO3)2 261.34 NO3- 62.004 Ba2+ 137.33
A 31.3g wafer of pure gold initially at 69.3^\circ C is submerged into 64.1g of water at 27.7^\circ C in an insulated container. What is the final temperature of both substances at thermal equilibrium
What is the final temperature in a squeezed cold pack that contains 40.0 g of NH4NO3 dissolved in 135 mL of water? Assume a specific heat of 4.18 J/(g·°C) for the solution, an initial temperature of 25.0°C
A 100 mL buffer solution initially has 1.00 M HClO (Ka = 3.0 × 10-8) and 0.75 M NaClO. What is the new pH when this 100 mL of 0.10 M NaOH is added to the initial buffer solution?
Calculate how many grams of Ni2+ are present in 3.36 moles of nickel(II) fluoride(NiF2) and also determine the number of moles of F- ion are present in 4.82 grams of nickel(II) fluoride.
Consider a 0.53 M solution of each of the following salts in distilled water. Will the solution be acidic, neutral, or basic? You may need to reference a table of Ka and Kb Tables values
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