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which of the responses includes all of the following that can form hydrogen bonds with water molecules?
Na+ (2) CH3COOH (3) C2H6 (4) CH3NH2
A. (1) and (2)
B. (1) and (3)
C. (2) and (3)
D. (2) and (4)
E. (3) and (4)
how many moles of ammonia are produced? How many moles of H2 remain? How many Moles of N2 remain? What is the limiting reactant?
Arrange the following reactions according to increasing change of entropy values. A. CH4(g) + H2O (g) = CO(g) + 3H2(g) B. C(s) + O2(g) = CO2 (g) C. H2O2(liquid) = H2O(liquid) + 1/2 O2 (g)
A septic tank leaks into the soil. The organic matter decomposes to produce carbon dioxide. Gas flow is restricted in the soil so that there is no air exchange to the atmosphere above
determine the average separation distance between the quantum dot and an adjacent gold nanoparticle for the molecular beacon (in the absence of the target sequence).
Our stock solutions are 0.2M EDTA, 0.04 M NaF and 1.2 M potassium phosphate. What volumes of the stock solutions should be measured?
What mass of this substance must evaporate in order to freeze 250 of water initially at 25? (The heat of fusion of water is 334 the specific heat of water is 4.18 .)
Hydrofluric acid in an aq solution has a molar mass of 20.01g/mol. A chemist dissovles a .2001g sample in 20.0 mL and titrates it
Molar mass from volumetric data, 2.64g of an organic base, isolated from a shrub in the mountains of Peru was dissolved in 100mL of water. 25.0mL of this solution required 27.5mL of 0.250mL HCL for complete neutralization
suppose that a 5.0X10^-5 M solution of Ba(OH)2 is prepared. What is the pH of the solution?
Calculate the value of the equilibrium constant at 298 K for the reaction: Sn(s) + Sn4+(aq) 2 Sn2+(aq).
Compare lattice energies of LiI and PbI2 and calculate the formation enthalpy in each case by constructing a Born-Haber cycle. Which one is more ionic? Comment.
What would happen if the buret washed and rinsed properly but not conditioned with sodium hydroxide solution, prior to standardizing the sodium hydroxide solution?
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