Tutored Practice Problem 3.2.1 Use Planck's equation to calculate photon energy (a) Calculate the energy of...
Tutored Practice Problem 3.1.1 cm Calculate wavelength and frequency of waves. (a) A local radio station broadcasts at a frequency of 96.7 MHz (96.7 x 10 Hz). What is the wavelength of these radio waves? Wavelength - (b) What is the frequency of red light with a wavelength of 685 nm? Frequency - Check & Submit Answer Show Approach
Tutored Practice Problem 21.1.4 COUNTERTOWARDS UNDE Name substituted arenes. It is not necessary to use italics in writing compound names. Name the following substituted arene. HO Check & Submit Answer Show Approach Tutored Practice Problem 21.1.3 GUNSTOWADDE Name alkenes and cycloalkenes. Name the compounds shown below. Check & Submit Answer Show Approach
Tutored Practice Problem 20.3.1 COUNTS TOWARDS GRADE Calculate standard free energy change using ΔHr and So values. Consider the reaction 4HCI(g) +02(g 2H20(g) 2C2(g) rxn* kJ/mol Check & Submit Answer Show Approach There is a second way to use thermodynamic data to calculate ΔGorm . Similar to the standard enth rxn
Tutored Practice Problem 19.3.4 COUNTS TOWARDS GRADE Calculate the equilibrium constant from the standard free energy change. Close Pr Using standard thermodynamic data (linked), calculate the equilibrium constant at 298.15 K for the following reaction. N2(g) + O2(g) +2NO(g) K- Check & Submit Answer Show Approach
Tutored Practice Problem 9.5.3 C Use molarity as a conversion factor. A SSINO Close Problem Calculate the mass, in grams, of zinc chloride that must be added to a 300-ml volumetric flask in order to prepare 300 mL of a 0.147 M aqueous solution of the salt. Check & Submit Answer Show Approach
Close Problem Tutored Practice Problem 19.3.1 COUNTS TOWARDS GRADE Calculate standard free energy change using AH and So values. Consider the reaction CH4(g) + H2O(g)—_>3H2(g) + CO(g) Calculate the standard free energy change for this reaction at 25°C from AHºrn and AS rxn: AGºrxn = kJ/mol Check & Submit Answer Show Approach
Tutored Practice Problem 18.1.3 cOUNTS TOWARDS GRADE Use equilibrium ion concentration to calculate Ksp Close Problem The Pb2+ concentration in a saturated solution of lead chloride is measured and found to be 1.65x102 M. Use this information to calculate a K,p value for lead chloride. Ksp Check & Submit Answer Show Approach
(a) Calculate the energy of a single photon of light with a frequency of 3.00×1024 s-1. Energy = __________________ J (b) Calculate the energy of a single photon of blue light with a wavelength of 474 nm. Energy=______________ j
(a) Calculate the energy of a single photon of light with a frequency of 4.74×108 s-1. Energy = ____J (b) Calculate the energy of a single photon of red light with a wavelength of 685 nm. Energy = _____J
Tutored Practice Problem 3.3.4 COUNTS TOWARDS GRADE Use reaction stoichiometry to calculate amounts of reactants and products. t GRAD use reaction stoichio The substances nitrogen monoxide and hydrogen gas react to form nitrogen gas and water Unbalanced equation: NO (+H2(g)N2 (g)H0 ) In one reaction, 49.5 g of H20 is produced. What amount (in mol) of H2 was consumed? What mass (in grams) of N2 is produced? mol H2 consumed g N2 produced Check & Submit Answer Show Approach