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To determine the concentration of a solution of lactic acid a chemist titrates a 20.50 mL sample of it with 0.1010 M NaOH and finds that 10.76 mL of titrant are required to reach the equivalence point. What is the concentration of the lactic acid solution in moles per liter?
Calculate the number of oxygen molecules per liter of air if the temperature and pressure were 25°C and 1.00 atm, respectively.
What is the partial pressure of N2(g) (in atm) in a container filled with 0.1 mol N2(g), 0.2 mol O2(g) and 0.35 mol CH4(g) when the total pressure in the container is 5.0 atm
Identify the two important classes of catalysts. Choose a catalyst that exists in the human body. Explain its importance and how it works.
A solution is known to contain Cl, NO3, NO2, and SO4 ions. which of these ions can be positevely identified? describe the reactions used
If 69.5 kJ of heat is applied to a 1040. g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
Give the empirical formula of the following compound if a sample contains 11.6g of iron and 5.01g of Oxygen
Write the systematic (IUPAC, or CA) names for the amines shown below. The names should have the format alkanamine.
Determine the % relative error for the following quantities: if there is no uncertainty given for a specific value, assume an absolute error of "1" in the last digit.
Classify the reaction type : combination , combustion, decomposition , single displacement, or double-displacement
Explain the chemical reactions that have possibly taken place in his body after the exercise. Discuss possible treatments for the freshman and how the treatment works chemically.
Propanoic acid, HC3H5O2, ionizes in water and has a Ka=1.34x10^-5. What is value of Kb for the propanoate ion
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K.
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