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Explain how the existence of isotopes is related to atomic masses not being whole numbers.
If 3.50 g of H2S are used in the above reaction, what will be the theoretical yield of water in grams?
Calculate the atomic mass of zinc from the relative peak intensities in the following spectrum. peak intensity for zinc 64 = 100 peak intensity for zinc 66 = 57.4 peak intensity for zinc 68 = 38.6
What concentration of aqueous NH3 is necessary to just start precipitation of Mn(OH)2 from a 0.020 M MnSO4? Kb for ammonia 1.8 x 10^-5, Ksp for Mn(OH)2 4.6 x 10^-16.
Calculate the pH of the solution. Round your answer to 3 significant digits. NaH2PO4(aq) = HPO42-(aq) + H+(aq) Constant Kw=10-14 Ka=6.20×10-8
For the given reaction, how many moles of ammonia will result from 3.0 moles of nitrogen and sufficient hydrogen
On the coldest day of last year, what was the temperature at the bottom of Lake Michigan? explain your answer in terms of the density of water.
What is the numerical value of the rate constant and what are the units? and Calculate the rate of this reaction when the initial concentrations of OCl- and I- are 7.6 x10-3 M and 9.6 x 10-3M respectively.
A 11.6-g sample of CaCl2 is dissolved in 139 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C ..
The calorimeter cup had several millimeters of water in it when you added the HCl in Step 16: b.) The base solution was added to the acid solution but was not stirred while temperature measurement were not made: c.) Some of the base splashed out o..
an aqueous vinegar sample contains 5.4 acetic acid by mass and has a density of 1.006 gml. calculate the amount of
If the ratio [HbCO]/[HbO2] comes close to 1, death will happen. What partial pressure of CO is fatal. Assume the partial pressure of O2 is 0.20 atm (since air is 20% O2).
If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
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