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What would affect the chemical shift of the sp3 hybridized carbon atom that would cause its peak to appear at ~ 64 ppm in a carbon-13 NMR?
a. Hybridization
b. Resonance
c. Number of hydrogen atoms attached to the carbon
d. Electronegative group attached to the carbon
Use the Causius Claperyon Equation to calculte the standard enthalpy of vaporization of ethnaol that its vapor pressure is 44.22 torr at 293 K and 350.8 torr at 333 K.
a 1.000 g sample of a certain mixture is 75% (by mass) potassium sulfate and 25% of an unknown sulfate with formula MSO4. the unknown is dissolved and precipitated with barium ions. If 1.489g of precipitate is collected, what is the identity of M
A buffer solution contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00 L. (a) What is the pH of this buffer? (b) what is the pH of the buffer after the addition of 0.02 mol of KOH? (c) What is the pH of the buffer after the addi..
Draw the lewis structures for each of the following molecules or ions. Which do not obey the octet rule? (a)NO (b) AlH3 (c) ICl2^- (d) OPBr3 (the P is the central atom) (e) XeF4
2 NO(g) + O2(g) 2 NO2(g) In one experiment 0.633 mole of NO is mixed with 0.354 mole of O2. Calculate also the number of moles of NO2 produced.
Image text transcribed for accessibility: A buffer was prepared by dissolving 0.370 mol of the weak acid HA (Ka = 1.00 times 10-5) plus 0.036 mol of its conjugate base Na+A- in 1.00 L. Find the pH.
A cylindrical steel pipe is used to transport hydrogen gas in a certain process. The density of the hydrogen in the pipe is 5kg/m3 and the density in the environment is effectively zero
a box contains 126000 red marbles and 885000 yelllow marbles. What sample size is required to reduce the sampling standard deviation of red marbles to 1.85%
A solution is 0.1 mM in NaF, Na2CO3, and Na3PO4. What would be the order of precipitation as a source of Ca2+ is added gradually to the solution? The relevant Ksp values are Ksp [CaF2] = 4.0×10-11, Ksp[CaCO3] = 8.7×10-9, Ksp[Ca3(PO4)2] = 1.3×10-32..
Explain how the carbonate system in natural waters provides buffering capacity
Diet cola drinks have a pH of about 3.0, while milk has a pH of about 7.0. How many times greater is the H3O+ concentration in diet cola than in milk
Standard reduction potentials for the Pb2+/Pb and Cd2+/Cd haf-reactinos are -.13V and -.40C, respectively. At what relative concentrations of Pb2+ and Cd2+ will these half-reactions have the same reduction potential?
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