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Vitamin K is involved in normal blood clotting. While 2.34 g of vitamin K is dissolved in 25.0 g of camphor the freezing point of the solution is lowered by 7.83 °C. The freezing point as well as Kf constant for camphor can be found here. Compute the molar mass of vitamin K.
What is the molar mass______g/mol?
A sports beverage company is seeking an energy supplement to increase the performance of the athletes. An ongoing research project suggest the use of a tetrasaccharide with the following characteristics
Extraction is an effective method for separating compounds which can be treated with an acid or base and made to differ in: boiling point
A reaction vessel contains 12.5 g of CO and 12.5 g of O2. How many grams of CO2 could be produced according to the following reaction
Given that Iron(III) oxide or ferric oxide (molar mass = 159.7 g/mol) reacts with Carbon monoxide (molar mass = 28.0 g/mol).
P4(s) + F2(g)-> PF3(g) What mass of F2 is needed to produce 187 g of PF3 if the reaction has a 80.1% yield?
How many nodal planes does a 4p sublevel contain and why. What is the possible set of quantum numbers for an electron with spin up in the 4d sublevel.
The isomerization of methyl isocyanide, CH3NC -> CH3CN, follows first-order kinetics. The half-lives were found to be 161 min at 199 degrees celcius and 12.5 min at 230 degrees celcius. Calculate the activation energy for this reaction.
Find a corresponding criterion for processes at constant V and T. The new thermodynamic variable that is used to express this criterion is called the Helmholtz free energy
What is the molarity of a solution made by dissolving 1.00 grams of HCl in enough water to make 100. mL of solution
What is the osmotic pressure of a solution formed by dissolving 44.0 mg of aspirin (C9H804) in 0.357 L of water at 25 degrees Celsius
Write the balanced chemical equation for this acid-base reaction, identifying the conjugate acid/base pairs. If the base-dissociation constant of B is 1 × 10^3, what is the pH at the midpoint of the buffer region. What are the chemical components of ..
Using the values from appendix C in the text calculate the Entropy and Enthalpy changes for the decomposition of ammonia into nitrogen and hydrogen at 298K and 1.0atm. Then determine the temperature at which the gases are in equilibrium with each ..
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