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Given the following: mass of eukaryotic cell= 3.5 ng; mass of prokaryotic cell= 1 pg; 20% of a eukaryotic or prokaryotic cell is protein; average molecular weight of proteins found within eukaryotic and prokaryotic cells= 50,000 g/moles; number of human cardiomyocytes= 1.0 x 10^10; number of prokaryotic cells in the human gut= 1.0 X 10^14. Answer the following: (a) how many protein molecules do you find in the average eukaryotic cell and prokaryotic cell? (b). What is the ratio of protein found within a human heart compared to the prokaryotic cells inhabiting human intestines?
energy to heat a certain sample of pure silver from 12.0 C to 18.2 C. Calculate the mass of the sample of silver.
Calculate the activation energy of this reaction in kJ/mol At what temperature would the half-life be 12.0 min?
A current of 3.15 A is passed through a Pb(NO3)2 solution for 1.40 hours. How much lead is plated out of the solution.
how many mols of o2 are produced by the reaction of 156g of co2 with an excess of ko2
A volume of 95.0ml of h2o is initially at room temperature 22.0 C. A chilled steel rod at 2.00 *C.is placed in the water. If the final temperature of the system is 21.2 *C. what is the mass of the steel bar?
If a buffer solution is 0.440 M in a weak acid (Ka = 1.0 × 10-6) and 0.230 M in its conjugate base, what is the pH?
What mass of oxygen will be dissolved in the water? The temperature of the water is 58 C, KH (02)=.00141 M/atm, and the mole fraction of oxygen gas in .23
Which of the following is correct? A) Solubility is the concentration of unsaturated ions in solution. B) Ksp is the same as the solubility. C) Ksp is an equilibrium constant and solubility is the concentration of a saturated solution
A 1-L flask is filled with 1.10 g of argon at 25 C. A sample of ethane vapor is added to the same flask until the total pressure is 1.20 atm . What is the partial pressure of argon,PAr , in the flask?
A gas mixture with a total pressure of 750 contains each of the following gases at the indicated partial pressures: , 253 ; , 120 ; and , 173 . The mixture also contains helium gas.
Cd2 forms two complexes with C2H3O2, with the following formation constants:(a) Find K2 for the reaction, (b) You prepare 1.00 L of solution containing 0.110 mol CH3CO2Na and 4.00 × 10-4 mol Cd(ClO4)2. Compute the fraction of cadmium in the form ..
To obtain the same antifreeze protection requires 76 g of propylene glycol to replace each 62 g of ethylene glycol. Calculate the mass of propylene glycol required to replace 9.00 gal of ethylene glycol.
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