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The number of protons in atoms of a given element; the number of electrons in atoms of a given element (Z)?
nitrate solution according to the unbalanced equation given below. Hg(NO3)2(aq) + NaI(aq) = HgI2(s) + NaNO3(aq) (a) What volume of Hg(NO3)2 is required for complete precipitation?
For the Rolaids tablet: Mass of the tablet : 1.32 g Cost of the Rolaids' bottle : $ 3.69 Number of tables in a bottle: 150 Molarity of the Acid : 0.59 M Volume of the Acid : .025 L Molarity of the Base
The zincblende structure of ZnS has the relatively large sulfide ion arranged at the lattice points of a face-centered cubic structure. The edge length of cubic unit cell is 540.9 pm. Determine the density of zincblende.
a) how many moles of sulfur are in 23.2 g of (C3H5)2S, b) how many atoms of hydrogen are in 0.75 mol of (C3H5)2S, c) how many grams of carbon are in 4.20 x 10^23 molecules of (C3H5)2S, d) how many atoms of carbon are in 15.0 g of (C3H5)2S
Calculate the freezing point depression of this solution, boiling point elevation of this solution, the vapor pressure change (from 23.76 Torr at 25°C) for the solution, the osmotic pressure for the solution, and the height of a column of water co..
a solution is prepared by mixing 50.0 ml of 0.30 m pbno32 with 50.0 ml of 1.4 m kcl. calculate the concentrations of
at 40 degrees h2o2 decomposes according to reaction2h2o -gt 2h20o2data collected for the concentration of h2o2 at
A certain atom has a threefold degenerate ground level, a non-degenerate electronically excited level at 3500 cm1, and a threefold degenerate level at 4700 cm?1. Calculate the partition function of these electronic states at 1900 K
how many moles of NH4Cl are necessary to prevent the precipitation of magnesium hydroxide (neglect change in volume due to addition of NH4Cl)? The solubility product for Mg(OH)2 is 1.5× 10-11, and the Kb for ammonia is 1.8 × 10-5.
Write the balanced equation for the reaction of calcium metal with iron (III) nitrate. The coefficients on calcium metal and iron metal in the balanced equation are:
question in the reaction below 2.41 atm each of h2 and br2 were placed into a 1.00 l flask and allowed to reacth2g
For the zeroth-order reaction: A ? products, what will happen to the rate of reaction if the concentration of A is doubled? A) The rate will be halved B) The rate will be doubled C) The rate will be quadrupled D) The rate will remain the same
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