Concept explainers
(a)
Interpretation: The explosion of dynamite produces a mixture of gases. The balanced equation is to be interpreted for the explosive decomposition of liquid nitroglycerin to produce a mixture of gases-carbon dioxide, water vapor, nitrogen, and oxygen.
Concept Introduction: The transformation of reactant molecules into product molecules is represented by a
Chemical equations can be used to represent a chemical reaction. The conversion is represented by a single-headed arrow and the chemical formula of the reactant and product molecules.
(b)
Interpretation: In the self-contained breathing apparatus, solid potassium superoxide reacts with carbon dioxide to form oxygen gas and solid potassium carbonate. The balanced equation is to be interpreted for the given reaction.
Concept Introduction: The transformation of reactant molecules into product molecules is represented by a chemical reaction. It entails the forming and breaking of chemical compound bonds.
Chemical equations can be used to represent a chemical reaction. The conversion is represented by a single-headed arrow and the chemical formula of the reactant and product molecules.
(c)
Interpretation: In a blast furnace, solid iron (III) oxide reacts with carbon monoxide to form solid iron and carbon dioxide. The balanced equation is to be interpreted for the given reaction.
Concept Introduction: The transformation of reactant molecules into product molecules is represented by a chemical reaction. It entails the forming and breaking of chemical compound bonds.
Chemical equations can be used to represent a chemical reaction. The conversion is represented by a single-headed arrow and the chemical formula of the reactant and product molecules.

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Chapter 3 Solutions
CHEMISTRY MOLECULAR NATURE OF MATTER AND
- Using a cell of known pathlength b = 1.25115 x 10-3 cm, a water absorption spectrum was measured. The band at 1645 cm-1, assigned to the O-H bending, showed an absorbance, A, of 1.40. a) Assuming that water density is 1.00 g/mL, calculate the water molar concentration c (hint: M= mole/L) b) Calculate the molar absorptivity, a, of the 1645 cm-1 band c) The transmitted light, I, can be written as I= Ioexp(-xb), where x is the absorption coefficient (sometimes designated as alpha), Io is the input light, and b is the cell pathlength. Prove that x= (ln10)*x*c. (Please provide a full derivation of the equation for x from the equation for I). d) Calculate x for the 1645 cm-1 bandarrow_forwardI need help with the follloaingarrow_forwardFor a CARS experiment on a Raman band 918 cm-1, if omega1= 1280 nm, calculate the omega2 in wavelength (nm) and the CARS output in wavelength (nm).arrow_forward
- I need help with the following questionarrow_forwardFor CARS, which statement is not true regarding its advantages? a) Contrast signal based on vibrational characteristics, no need for fluorescent tagging. b) Stronger signals than spontaneous Raman. c) Suffers from fluorescence interference, because CARS signal is at high frequency. d) Faster, more efficient imaging for real-time analysis. e) Higher resolution than spontaneous Raman microscopy.arrow_forwardDraw the major product of the Claisen condensation reaction between two molecules of this ester. Ignore inorganic byproducts. Incorrect, 5 attempts remaining 1. NaOCH3/CH3OH 2. Acidic workup Select to Draw O Incorrect, 5 attempts remaining The total number of carbons in the parent chain is incorrect. Review the reaction conditions including starting materials and/or intermediate structures and recount the number of carbon atoms in the parent chain of your structure. OKarrow_forward
- Using a cell of known pathlength b = 1.25115 x 10-3 cm, a water absorption spectrum was measured. The band at 1645 cm-1, assigned to the O-H bending, showed an absorbance, A, of 1.40. a) Assuming that water density is 1.00 g/mL, calculate the water molar concentration c (hint: M= mole/L) b) Calculate the molar absorptivity, a, of the 1645 cm-1 band c) The transmitted light, I, can be written as I= Ioexp(-xb), where x is the absorption coefficient (sometimes designated as alpha), Io is the input light, and b is the cell pathlength. Prove that x= (ln10)*x*c d) Calculate x for the 1645 cm-1 bandarrow_forwardConvert 1.38 eV into wavelength (nm) and wavenumber (cm-1) (c = 2.998 x 108 m/s; h = 6.626 x 10-34 J*s).arrow_forwardCan you help me understand the CBC method on metal bridging by looking at this problem?arrow_forward
- A partir de Aluminio y Co(NO3)2ꞏ6H2O, indicar las reacciones a realizar para obtener Azul de Thenard (Al2CoO4).arrow_forwardTo obtain Thenard Blue (Al2CoO4), the following reaction is correct (performed in an oven):Al(OH)3 + Co(OH)2 → Al2CoO4 + 4 H2Oarrow_forwardProblem 38 can u explain and solve thanks april 24arrow_forward
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