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A gas of unknown identity diffuses at a rate of 83.3 mL/s in a diffusion apparatus in which carbon dioxide diffuses at the rate of 102 mL/s. Calculate the molecular mass of the unknown gas.
A student is concentrating a solution having a polypeptide of modest molecular weight by pressure filtration through a membrane. The solute concentration on the feed side of the membrane is 0.10 M and the temperature is twenty five degree celsius.
You prepare a buffer solution from 10.0mL of 0.100 M MOPS 3-morpholinopropane-1-sulfonic acid as well as 10.0mL of 0.085 M NaOH. Next, you add 1.00mL of 2.87 × 10-4 M lidocaine to this mixture Denoting lidocaine as L, compute the fraction of lidoc..
how many rads does a 81- kg human receive each year from the approximate 10^-8 grams of 14 C naturally present in her body? (t 1/2 = 5,730 yr; each disintegration releases 0.156 MeV.)
What are some differences and/or similarities in the type of inhibition caused by heat, acid or base and heavy metal ions on enzyme activity
The temperature of the calorimeter rises by 25.4oC (Celsius). Specified that the energy of combustion (?E) for stearic is -40.5 kJ/g, compute the heat capacity of the bomb calorimeter. Make sure you enter kJ/C for your unit behind the number.
The star Tau Bootis (Tau Boo) has a luminosity of 2.515 LSun. Which of the following radius and temperature pairing probably belongs to Tau Bootis?
Calculate and compare the value for the molar volume at 21.5C obtained in part 2 with the value for the molar volume at 21.5 obtained in part 1. The molar mass of Zn is 65.38
What is the molar mass of adrenaline if the Kb = 5.02 degrees Celsius/m?
when rubidium metal is exposed to air one rb atom is combined with two oxygen atoms. if 1.75g of rb is exposed to air
When solving this problem, assume that no heat is lost from the calorimeter to the surroundings, the density of all solutions is 1.00 g/mL, the specific heat of all solutions is the same as that of water, and volumes are additive.
Problem- Draw the Lewis structure for CH2. Which of the following statements is the valence bond description of the bond between carbon and oxygen in this molecule
Consider the molecule with the following skeletal structure: HNCH-OH.The order of atoms shown above indicates their connectivity within the molecule. a) Draw the complete Lewis structure for this structure indicating lone pairs where appropriate.
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