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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
A chemist must dilute 80.5mL of 126mM aqueous sodium thiosulfate solution until the concentration falls to 110.mM . He'll do this by adding distilled water to the solution until it reaches a certain final volume.
State the chemical reaction that took place in the patient's body.
Depict whether or not a precipitate will form when a solution containing 1x10-2 M Pb2+ ions is added to a 2 x 10-4M solution of I- ions the Ksp of PbI2 is 9.8×10-9
What role does ammonium bromide play in the conversion of the trans-substituted aziridine to the diazabicyclo
Estimate the critical pressure of a mixture of methane as well as n-hexane if the critical temperature of the mixture is known to be 200F. Contrast with the critical pressures of pure methane and pure n-hexane.
The crystal lattice enegery for LiBr(s) is -818.6 kJ/mol at 25 degrees Celcius. The hydration energy of the ions of LiBr is -867.4 kJ/mole at 25 degrees Celcious (for infinite dilution).
Which of the following groups would have the highest priority in determining R and S. a) CH2CH2OH b) CH(CH3)2 c) CH2CH3 d) CH2C(CH3)3
Consider n moles of ideal gas kept in a heat isolated cylinder (all processes are adiabatic) with a piston at extrnal pressure P(i), and at the temperature T(i). the extrnal pressure is suddenly changed to P=2P(i), and we wait for the system to eq..
How many L of H2 gas (at STP) is produced from 470 mL of 0.36 M HCl and excess Zn? The reaction is: Zn + 2HCl = ZnCl2 + H2
Question- For the diprotic weak acid H2A, KA1 = 2.1 X 10 ^-6 and KA2 = 8.3 X 10 ^-9. What is the pH of a 0.0600 M solution of H2A. What are the equilibrium concentrations of H2A and A ^-2 in this solution
a ball of aluminum c 0.897 jgdegc has a mass of 100 grams and is initially at a temperature of 150degc. this ball is
If a segment of DNA consists of 5'-TCTAGC-3', the nucleotide order in the complementary mRNA strand (written in 5' to 3') would be:
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