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An evacuated 1.00 L gas bulb was filled at STP (standard temperature and pressure) with 1.34 g of an unknown hydrocarbon (compound of carbon and hydrogen), which was then burned in excess oxygen, completely converting it to carbon dioxide and 2.41 g water. What is the molecular formula of the hydrocarbon?
A key oxidative step(s) in the B-oxidation cycle of fatty acids includes: a. addition of water to a double bond b. generation of a double bond from two adjacent -CH2 carbons
A 50ml sample of a white dinner wine required 21.48 ml of .03776 M NaOH to achieve a phenolphthalein end point. Express the acidity of the wine in terms of grams of tartaric acid (150.09g/mol) per 100 ml.
The stock solution of KMnO_4 has a concentration of 2.6 X 10 ^ -4M. The pipette has a volume of 10.0mL. What is the amount of KMnO_4 delivered to the solution, in moles
What is the percent by mass of NaHCO3 in a solution containing 10 g of NaHCO3 dissolved in 300 mL of H2O
What mass of Sucrose(C12H22O11) should be combined with 456g of water to make a solution with an osmotic pressure of 8.05atm at 280K
The pI can be estimated fairly accurately (within 0.1 or 0.2 pH units) from the pK values of all the proton dissociable groups in the peptide. Using pK values from the table at the right, estimate the pI value of the following hexapeptide
Using the equilibrium constant given for the reaction below, calculate the equilibrium constant for the following reaction: 3SO3(g) + 3NO(g) = 3SO2(g) + 3NO2(g) Kc=?
If 28 mL of NaCl reacts completely with 46 mL of 0.44 AgNO3, what is the molarity of the NaCl solution? The reaction is: AgNO3 + NaCl = AgCl + NaNO3
The temperature of the mixture is 0? , and the total pressure is 1.00 atm . How many grams of helium are present in the gas mixture? Mass of He =?
A thief plans to steal a gold sphere with a radius of 30.0 cm from a museum. If the gold has a density of 19.3 g/cm^3, what is the mass of the sphere?
Using your average value for Kc and the concentrations provided for the reactants, determine the absorbance expected when 16.00mL of Fe 3+ (aq) is reacted with 10.00 mL of SCN (aq).
A balance is checked and found to be accurate and clean. After the lab, a spilled white solid is found on the balance. The only white substances available in the lab were barium chloride and sodium sulfate
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