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Draw the line-angle formula of the straight-chain (no carbon side chain) positional isomers of CH 3 CH ═ CHCH 2 CH 2 CH 2 CH 3
Write chemical equation(s) for following conversions :
i) Acetophenone to ethylbenzene
ii) Benzene to ethylbenzene
iii) Bromobenzene to ethylbenzene
iv) Phenylmagnesium bromide to ethylbenzene
v) n-Octane to ethylbenzene
- Combustion analysis of 1.0 g of a compound containing only carbon, hydrogen and oxygen gives 2.3 g of carbon dioxide and 0.93 g of water. If the relative molecular mass of the compound is 58, calculate the empirical and molecular formula of the compound.
A sample of hydrogen (H2) gas was collected over water at 60°C.
If the total volume of gas collected was 83.5 mL and the atmospheric pressure was 1.1 bar, what mass (in g) of hydrogen gas was collected above the water?
The vapour pressure of water at 60°C is 150 torr.
can u use sulfuric acid to make tert-butyl chloride?
Gaseous methane reacts with gaseous elemental sulfur to produce gaseous carbon disulfide and hydrogen sulfide gas.
(a) Write the balanced chemical equation. Hint: What is the formula of elemental sulfur?
(b) If 6.20 g of methane and 2.90 g of sulfur are sealed in a 1.00 L vessel, what mass of hydrogen sulfide will be produced if the final temperature is 129.0 °C? Assume 100% yield.
(c) What are the (i) mole fractions, (ii) partial pressures (in bar), and (iii) root-mean-square speed of all gaseous species in the reaction vessel at the end of the reaction (129.0 °C)?
condensed structural formula of 3-methyl-2-octene
What is incorrect about the name 2-ethylpentane?
The functional isomer of cyclopentanone is
Lysine, an essential amino acid in the human body, contains C, H, O, and N. In one experiment, the complete combustion of 2.175 g of lysine gave 3.94 g CO2 and 1.89 g H2O. In a separate experiment, 1.873 g of lysine gave 0.436 g NH3. (a) Calculate the empirical formula of lysine. (b) The approximate molar mass of lysine is 150 g. What is the molecular formula of the compound?
#339914 on Dec 2023