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At 20" vapor pressure of benzene (CsH6) is 75 tort, and that of toluene is (C-Hs) is 22 torr, Both are volatile solvents. Assuming they form an ideal solution, what is the mole fraction for each component when a mixture of the two solvents has a vapor pressure of 35 torr at 20°C. (Hint: look at page 544 in your text.)
Calculate the number of grams necessary to prepare 50. ml of 0.45 M NaCO2H. Calculate its pH.
Use the ideal gas equation in the Background section of the lab manual (PV=nRT) to find the number of moles of gas produced by the reaction. The gas constant, R, is given as: R = 0.082057 (L*atm)/(K*mole) You will need to convert the temperature f..
Problem- Given a vapor pressure of toluene of 21 mm Hg, at 760 mm Hg, what is the equilibrium concentration for toluene
Question- In which of the following do you expect the percent ionization of 1 mol of NH4Cl to be greatest in 500mL water, 1000mL of water or 1000mL of a 0.10 M NH3 solution. Explain.
Classify the following as exothermic or endothermic reactions: a) The energy level of products is lower than that of the reactant. b) In the body, the synthesis of proteins requires energy. c) 125kJ is absorbed.
When we go across a row of the periodic table, electrons are added and the ionization energy typically increases. When we go down a column, however, electrons are being added but the ionization energy typically increases. Explain this behavior. Th..
N2O4+ 2 N2H4= 3 N2 + 4 H2O, Determine the limiting reactant and the mass in grams of nitrogen that can be formed from 50.0g N2O4 and 45.0g N2H4. The molar masses are as follows: N2O4=92.02g/mol, N2H4=32.05g/mol.
A gas st SATP occupies 1.629 L. What is the volume of the gas if the pressure is reduced to 79 kPa without changing the temperature?
Draw as many resonance structures as you can for the following nitrogen-containing compounds. Not all will obey the octet rule. (a) N2O (b) NO (c) NO2
Explain why light intensity is dependent on the distance the detector is from the light source. Describe the mathematical relationship.
The physical separation of crude petroleum into fraction is based on boiling point differences among components present.
A 2.32 L balloon contains helium at 1.00 atm and 25°C. How many grams of helium are contained in the balloon.
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