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Problem- A compound that contains only C, H, and O is subjected to combustion analysis. A 0.3654 gram sample of this compound yields 1.0420 g CO2 and 0.2437 g H2O. If the substance has a molar mass of 216 g/mol, what is the molecular formula of the substance?
A. C7H15O7
B. C10H5O5
C. C14H16O2
D. C15H20O
E. C16H8O
Provide your answer in scientific notation
evaporated the water from NaOH extracts prior to adding acid?
If you add liquid mercury, the sand will float to the top of the mixture, while the gold will dissolve. You can then skim the sand from the surface. Finally you can recover the gold by heating the solution to evaporate the mercury. Make a flowchar..
A beaker with 1.70×102 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.20 mL of a 0.490 it M HCl solution to the beaker. How much wi..
given that the heat of fusion of water is -6.02 kjmol that the heat capacity of h2o is 75.2 jmolk and that the heat
Question- 40 proof whiskey is diluted with water so that there is 4 mL whiskey and 96 mL water and then 10 mL whiskey and 90 mL water. what is the alcohol content of the 4 and 10% solutions
excessive usage of pesticides in the golf field in boryung chungnam province prof hans hometown have let to severe
Calcium in blood or urine can be determined by precipitation as calcium oxalate CaC2O4. The precipitate is dissolved in strong acid and titrated with potassium permanganate. The products of the reaction are carbon dioxide and Manganese ii ions.
Question- You needs to produce a buffer solution that has a pH of 5.03. You already have a solution that contains 10. mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this..
Explain what simple test can be performed to show that 3-chlorobenzoic acid is not eluted from the chromatography column? TLC possibly
Give all structural and geometric isomers for the monobromination of propylcyclopentane. Number the different isomers. Draw geometric isomers next to each other and label cis/trans.
The solubility product constant (Ksp) for the dissolution of CaF2 as represented by the chemical equation is 3.4 x 10-11. CaF2 (s) Ca2+ (aq) + 2 F- (aq) Calculate the molarity (M) of Ca2+ in a saturated solution of CaF2
At a certain temperature the rate of effusion of helium is twice the rate of effusion of a gaseous X.X is a binary combination of carbon and hydrgen.
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