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Calculate the mass of nitrogen dissolved at room temperature in an 93.0 home aquarium. Assume a total pressure of 1.0 and a mole fraction for nitrogen of 0.78.
a gas is placed in a balloon with a volume of 3.0L at 35C and 800 torr. What would be the new volume for the gas if placed under STP
Calculate the partial pressure of each gas -black, gray and white- if the total pressure inside the following container is 720 mmHg
What is the energy of a C-C bond in kJ/mole? Explain. How does this amount of energy compare?
A reaction has a rate consant of 1.23/mol*s at 433 Celcius and 24/mol*s at 533celcius.
Calculating the molecular formula of an organic compound. Worked example, using fundamental formula and balanced equations.
When using M1 x V1 = M2 x V2 to calculate any concentration or volume, what must one remember with regards to glassware when recording / using volumes
A solution of ethanol (C2H5OH) in water is prepared by dissolving 88.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 300.0 mL of solution. What is the molarity of the ethanol in this solution?
Calculate the number of liters occupied at STP: a. 1.7 mol H2(g); b. 1.8 x 10-2 mol N2(g); c. 2.5 x 10(2) mol O2(g)
Many drugs are high-molecular-weight amines that are weak bases. Such amines are not soluble in water, which limits the ways they can be administered and means that they are not soluble in body fluids such as blood plasma and cerebrospinal fluid
Debye-Huckel limiting law to calculate the activity coefficients. Calculate the percentage difference between the a) and b) solubility products for each
Given the values of Ka and Kb below, which of the systems given would be most suitable to use to construct a buffer of pH 9
Write chemical equations and corresponding equilibrium expressions for each of the three ionization steps of phosphoric acid. Write chemical equations for first ionization step of phosphoric acid. H3PO4(aq)+H2O(l) H3O+(aq) + H2PO4^- (aq)
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