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Classify each of the following as a compound, a homogeneous mixture, or a heterogeneous mixture. (a) wax (c) air (d) gasoline (e) iron(II) sulfide
Calcium nitrate solution is added to a solution of sodium phosphate
The concentraion of comercially availble concentrated nitric acid is 70.0 percent by mass, or 15.9M. Calculate the density of the solution (Please explain in detail how to find density) Density in g/mL
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L 1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L 1 NaOH(aq) to neutralize the excess, unreacted HCl.
For the unbalanced equation Cl2 ++ KI = I2 + KCl - how many moles of the second reactant would be require to react exactly with the 0.275 mole of the first reactant
How many moles of methane (CH4) are required to react completely with 139 L of carbon tetrachloride according to the following reaction at 0 C and 1 atm
The major reason that antiparallel beta-stranded protein structures are more stable than parallel beta-stranded structures is that
Sodium chloride, NaCl, is a strong electrolyte, as is hydroiodic acid, HI. Write the chemical equations for what happens when these substances are added to water.
How many milliliters of 0.10 M HCl would have to be added to 100 mL of a saturated solution of PbCl2 in contact with 50.0 g of solid PbCl2 to reduce the Pb2+ concentration to 0.0050 M? (Don't forget to take into account the combined volumes of the..
At 600 degrees C, the equilibrium constant for the reaction 2HgO(s) --> 2Hg (l) +O2 (g) is 2.8. Calculate the equilibrium constant for the reaction 1/2O2(g) + Hg(l) --> HgO (s)
If a 1000 kilogram sample of rock is 0.021% gold by mass. How much zinc is needed to react with the gold extracted from the rock?
How much PV work is done, if 90 grams of ethylene and 120 grams of HCl are allowed to react at atmospheric pressure and the volume change is -71.2 liters?
if the initial water level in the graduated cylinder is 21.2 ml and the level rises to 27.7 ml after the object is placed in the cylinder, what is the volume of the object?
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