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Explain how this model can be used to reduce the number of dangling bonds from 49 (unreconstructed) to 19 (constructed). B. Explain the origin of the name dimer adatom stacking fault.
a what temperature change would you expect in which 50.0 ml of 2.0m hcl is combined with 80.0 ml of 2.0 m naoh in
how to find the molar concentration of a soloution of phosphoric acid if 17.8 mL of it neutralizes 20.0 mL of 0.050 mol/L calcium hydroxide.
A student has invented a new temperature scale, the Zuban scale ,In common with the Celsius, Kelvin and Fahrenheit scales, it is a linear scale.
The general molecular formula for alkanes is CnH2n+2. What is the general molecular formula for cycloalkanes with two rings
A green leaf has surface area 2.20 cm^2. If solar radiation is 1190 W/(m^2) , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
It's proton NMR spectrum displays 4 signals as follows: 1.0 ppm(triplet, 3H); 2.4 ppm (quartet, 2H); 3.7 ppm(singlet, 2H); 7.2 ppm (multiplet, 5H). Identify the structure of this compound.
Show that the enthalpy of combustion of saturated hydrocarbons may be expectred to follow the relation
predict the vernier angle based on the following best-fit line equation: y = 0.0126x + 25.68? y is for vernier angle and x is for wavelength in nm. Estimate to the nearest whole number.
at 84 degrees C the total vapor pressure of a solution contains 1.2 moles A and 2.3 moles B is 331 mmHg. Upon the addition of another mole of B to the solution, the vapor pressure increasing to 347mmHg.
acetylene gas c2h2 is produced by adding water to calcium carbide cac2cac2 2h2o gt c2h2 caoh2 .how many grams of
Write a balanced net ionic equation for the reactions, if any, that occur between (a) FeS(s) and HBr(aq); (b) K2CO3(aq) and CuCl2(aq); (c) Fe(NO3)2(aq) and HCl(aq)
ephedrine is used as a bronchodilator and decongestant. phenobarbital is used as an anticonvulsant and sedative. what simple chemical test distinguishes these 2 medicines?
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