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A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.145 g of this subunit was dissolved in enough water to produce 2.00 mL of solution. At 28 Celsius the osmotic pressure produced by the solution was 0.138 atm. What is the molar mass of the protein?
Methylated lidocaine, Lidocaine is thought to bind to receptors in its methylated form. Identify in writting the atoms or groups in the compound that could be involved in its binding to a receptor via- hydrogen bonding an ionic interaction
what fraction of this side chain is positively charged and what fraction is neutral at pH 7.2?
When atoomic orbitals are hybirdized the s orbital and at least one p orbital are always hybirdized. III. to create tetrahedral structures the s orbital and all three p orbitals must be hybirdized.
Rubidium has two naturally occuring isotopes. The relative abundance of rubidium-85 is 72.17%; its atomic mass is 86.91 amu. Determine the average atomic mass of rubidium.
Suppose you carry out a kinetics experiment on this reaction with initial concentrations [A] = 10.0 M and [B] = 0.025 M, and you follow [B] vs. time. Describe the plot you would get. What is the value of the observed rate constant?
What minimum pressure must be supplied to a reverse osmosis water purification system in order to overcome the osmotic pressure in water that is 1.24 M in total dissolved ions at 16 C?
When you heated the hydrated compound this process starts slowly at first find out the reason behind this and compute k for this acid if A 0.020 M solution of weak acid HA is 0.60% ionized.
Some of the original solid remained and total pressure in container was 7.76 atms when equilibrium is reached. Calculate number of moles of H2O(g) present at equilibrium How many grams of original solid remain
A gas occupies a volume of 1.0 L at a temperature of 27°C and 500 torr pressure. calculate the volume of the gas if the temperature is changed to 60°C and the pressure to 700 torr
Sodium nitrate decomposes upon heating to form sodium nitrite and oxygen gas. This reaction is sometimes used to produce small quantities of oxygen in the lab. How many grams of sodium nitrate must be heated to produce 128g of oxygen?
Which of the following cannot act as a Brønsted-Lowry base in an aqueous solution? a) ammonia, NH3 b) acetate ion, CH3CO2-
Do bonds break during the evaporation of the molecular substances hexane and 1-pentanol
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