For the diprotic weak acid H2A, Ka1= 3.7x10^-6 and Ka2= 5.4x10^-9. What is the pH of a 0.0750 M solution of H2A? pH= What are the equilibrium concentrations of H2A and A2- in this solution? [H2A]= [A2-]=

(c) The same weight of methane is more efficient than ethane. True or false? True O False

this was incorrect, im confused

student found a bottle of unknown origin in the basement of an "CAUTION—contains С₁H₁O.” No other A old house. The bottle was labelled information was given, but inside the bottle were some white crystals. The student took the bottle to a chemistry laboratory, where she analyzed the crystals with the help of the laboratory staff. C₁2H₁6O reacted with Br₂ in CCl4 adding one mole of Br, and forming C₁₂H₁OB2₂. When a sample of C₁₂H₂O was reacted with O3 followed by Zn/H₂O, two different samples, J and K, were obtained. Compound J had a molecular formula of C.HgO₂, and its NMR is shown below. Compound K had a molecular formula of C₂H₂O, and it could be oxidized to compound L, with a molecular formula of C₂H₂O₂. The IR spectrum of L showed a very wide, strong band centred around 3000 cm*¹. The NMR spectrum of L showed only two different absorptions: a doublet (6H) at 0.9 ppm and a septet (1H) at 3.6 ppm. There was also a singlet (1H) off the scale at 11.8 ppm. students, deduce possible…

Just #2 please

Need help I don’t get thisss

3. Convert the Lewis structures to line-angle formulas H H a. b. с. d. H CI I I CI Н н-с Н H N: Н H С H н C I Н C -С Н Н Н C. I Н C C C н H C H Н C H Н C C C I C-C H I H :0 C Н H H H I :0 I I C-Br C C: H О Н H H

f) 엿 1- 2- H+ Br 3- Ht, H2O 1-O3, CH2Cl2, -78 °C 2- CH3SCH3 CgH1402

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Q1. What is another name for NO