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Hemoglobin, the oxygen carrying protein in red blood cells, has four iron atoms per molecule andcontains 0.340 percent iron by mass. Calculate the molar mass of hemoglobin.5.
an aerosol spray can with a volume of 441 ml contains 3.09 g of propane gas as a propellant. what volume would this
The reactant concentration in a first order reaction was 5.50x10^-2 M after 40.0s and 1.60x10^-3 M after 100s. What is the rate constant for this reaction
Calculate the heat capacity per gram of metal. Assume no heat is lost to the calorimeter or the surroundings. The specific heat capacity for water is 4.184 J/g
a solid block of exactly 100.0 cm cubed has a mass of 153.6g. Determine its density.Will the block sink or float on water.
Give the formula of a product derived from the first-named substance that may be formed in the following reactions. Note, in the example that any lower oxidation state compound is possible
What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 308 torr at 25 oC? (At 25 oC the vapour pressure of pure pentane is 511 torr and that of hexane is 150 torr.)
one mole of nitrogen gas n2 is confined within a cylinder at the temperature of twenty five degree celsius and heated
what mass of solid LiOH must be added to 1.0 L of 1.35 M hydrofluoric acid solution in order to create a buffer solution
Find the magnitude of charge of C-F in CH3F, represented in units of e, given that the dipole moment is 1.847D and the bond length is 1.385angstroms.
The overall reaction for the corrosion of iron by oxygen is given by the following reaction. 4Fe (s) + 3O2 (g) ?? 2Fe2O3 (s) Compound ?H° (kJ/mol) S° (J/mol K) Fe (s) 0 27 O2 (g) 0 205 Fe2O3 (s) -826 90 Calculate the equilibrium constant, Keq, for..
What types of intermolecular forces are present in P4. Dipole is there due to the loan pairs on Phosporus atoms. Or, is it only dispersion forces.
A 17.6-g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0°C in an insulated coffee-cup calorimeter with a heat capacity of 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat capacity of the allo..
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