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A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult?
A 4.37 gram sample of a certain diatomic gas occupies a volume of 3.00 L at 1.00 atm and 45°C. What is the gas
Calculate the altitude at which only 10% of the mass of the atmosphre is above and 90% of the mass of the atmosphere is below.
A 50.00-mL sample of white dinner wine required 24.76 mL of 0.03867 M NaOH to achieve a phenolphthalein end point. Express the acidity of the wine in terms of grams of tartaric acid
Calculate the volume (in mL) of a 0.680 M KOH solution that should be added to 4.000 g of HEPES (MW=238.306 g/mol, pKa = 7.56)
what maximum volume of a buffer with a ph=4.58 can be prepared using only these two resources?
A gaseous reaction occurs at a constant pressure of 45.0 atm and releases 57.1 kJ of heat. Before the reaction, the volume of the system was 9.00 L . After the reaction, the volume of the system was 2.60 L.
C5H12, 10.0 g hexane, C6H14 and 10.0 g benzene, C6H6. What is the mole fraction of hexane?
MgNH4PO4*6H20 loses H20 stepwise as it is heated. Between 40 and 60 degrees C the monohydrate is formed, and above 100 degrees C the anhydrous material is formed. What are the phosphorus percentages of the monohydrate and of the anhydrous material..
write a complete and balanced molecular equation and identify the precipitate that forms when aqueous solutions NaOH and Cu(NO3)2 are mixed and identify all phases.
Write balanced net ionic equation for the reactions that take place when the following reagents are mixed together in aqueous solution:
Would it be a good idea for a person to take a couple of aspirin tablets before attending a cocktail party? Explain your reasoning. This needs to be from a chemistry stand point.
the world's estimated annual gas reserves in 2006 were 6124 trillion ft3 .The world rate of annual use was 105.5 trillion feet3. How long these reserves will last if the rate of use continues?
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