Calculate the mass percent composition of aluminum
A 4.78-{g} sample of aluminum completely reacts with oxygen to form 6.67 {g} of aluminum oxide. Calculate the mass percent composition of aluminum in aluminum oxide .
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Provide the correct name for the following peptide. Ala-Ala-His-Phe-Lys-Asp-Asn-Phe What is the N-terminal amino acid? The C-terminal amino acid? What is the net charge on the peptide at pH 1.0?
The rock in a particular iron ore deposit contains 80% Fe2O3 by mass. How many kilograms of the rock must be processed to obtain 1400kg of iron?
If 18.3mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?
After equilibrium was established, it was found that 36.0 percent of the NOCl had dissociated. What is the equilibrium partial pressure of N2O4? Calculate Kp and Kc.
What two body systems work together to provide well-coordinated, generalized, nonspecific responses to combat stress?
What volume of 0.125 M HClO4 solution is needed to neutralize 45.00mL of 8.70×10-2 M NaOH?
What is the equilibrium concentration of carbon dioxide in water that is in contact with air at 25 .C and 0.982 atm. The mole fraction of CO2 in air is 3.01 . 10-4. The Henry's law constant for carbon dioxide is 4.48 . 10-5 M/mm Hg.
The vapor pressure of pure water at 50.0 .C is 92.5 mm Hg. Calculate the ideal partial pressure of water at this temperature for a mixture of 45.0 g H2O and 55.0 g CH3OH?
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