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How many molecular orbitals are present in the valence band of a sodium crystal with a mass of 5.90g?
In the gravimetric determination of Zn^2+, 2.2024 g sample was dissolved and made up to volume in a 100.0 mL flask. A 10.0 mL aliquot were precipitated by adding a soluble pyrophosphate salt and heating the precipitate to a solid Zn2P2O7 (304.728 ..
I dissolved .5 grams of mustard in 3 mL of distilled water. I was asked to determine the mass percentage of acetic acid in mustard, so I added 2.5 mL of NaOH to turn the mustard solution red.
what is happening in the reaction between pyridine and SnCl4. What are possible products of the reaction
Draw electron-dot structures for the following molecules which contain atoms from the third row or lower: (a) SbCl3 (b) KrF2 (c) ClO2 (d) PF5 (e) H3PO4 (f) SeOCl2
consider the nitryl cationno2. write all possible lewis structures for this ion. draw the molecule by placing atoms on
what volume of ammonia gas, measured at 660.3 mmhg and 58.2c, is required to produce 6.46 g of ammonium sulfate according to the following balanced chemical equation
A mixture of twenty five grams of potassium nitrate(KNO3) and two grams of CuSO4*5H20 with 11.5 grams of water at 100 degree celcius temperature, 15 g ramsof water are mixed.
The binding energy of electrons to gold is 492 kJ/mol. What is the longest wavelength of light shone on gold that will cause electrons to be ejected?
If 5.50 g of the unknown compound contained 0.183 mol of C and 0.367 mol of H, how many moles of oxygen, O, were in the sample?
you have a solution of sodium nitrate containing 140 g at 65 degrees celcius. how many additional grams of solute must
A system absorbs 198kJ of heat and the surroundings do 120kJ of work on the system. What is the change in internal energy of the system
What is the value of Delta G when [H+]= 1.6×10?8 ,[CH3NH3] = 5.0×10?4 , and [CH3NH2] = 0.110 delta Go=19.1
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