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A neutral atom as the electron arrangement, 2, 8, 8, 1. How many additional electrons can be placed in the first, second, third and fourth shells of this atom, respectively?
A gas occupies 22.4 L at STP and 14.5L at 100 C and 2.00 atm pressure. how many moles of gas did the system gain or lose?
Question- Calculate the mass of potassium oxalate monohydrate and calcium chloride necessary to make 0.25 g of calcium oxalate.
What safety precautions should you take when working with sodium hydroxide solutions
write symbol for bromine. what is the atomic number of it in periodic table? how many protons and electrons are there
Write the structure of the carbocation formed by the protonation of C-2 or C-3 to verify that it is not allylic and therefore not as stable as the one formed by the protonation of C-1 or C-4.
How many moles of lithium nitrate are theoretically produced if we start with 3.4 moles of Ca(NO3)2 and 2.4 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 ? 6LiNO3 + Ca3(PO4)2
The "roasting" of 48.7 g of ZnS at constant pressure gives off 220. kJ of heat. Calculate the DH for this reaction. 2ZnS(s) + 3O2(g) ® 2ZnO(s) + 2SO2(g)
Question- If 2.00 grame of HEPES and 2.70 grams of HEPES-H+ are mixed and diluted to a final volume of 1.00L, what is the pH of the resulting buffer
the equilibrium constant for the following reaction has the value 2.1103 at a particular temperature.h2g f2g 2 hfgwhen
Compute the concentration of oxalate ion (C2O4) in a 0.175 M solution of oxalic acid (C2H2O4). For oxalic acid, Ka1 =6.5*10-2 and Ka2 = 6.1 * 10-5
In the following procedure, we are performing an extraction with ethyl acetate. What compounds are we separating from our product? Procedure
when 79.272 cg of nitrogen gas is reacted with 79.272 cg of hydrogen gas how many grams of ammonia are
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