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Problem- Extension to Lab 3-1 Identify the visible absorption spectrum of an aqueous solution of sugar. 3 charts are shown a.Absorbance at 2.0, b.absorbance at 0, and c.absorbance curve at 1 trending down to 0 all on the 400 to 700 scale. So if glucose is transparent to visible light at 400-700 wv. What would absorbance would be?
State your answer as a chemical formula.
an 8.89 g ice cube initially at -12oc is placedin a closed insulated container. a heater adds 600w for 45
Explain how much heat is evolved when 320 g of SO2 is burned as per to the chemical equation shown below
White phosphorus is a molecular solid made of molecules of P4. A 3.88 g sample of white phosphorus starts at 24oC. Calculate the amount of heat (in J) required to melt the sample.
a researcher collects .00603 mol of an unknown gas by water displacement at a temperature of 28.8 deg.c and a 0.940 atm
Calculate the feed rate of humid air in SCMH? Vapor pressures of water at 32 °C and 4 °C are 35.7 mm Hg and 6.1 mm Hg respectively. Treat air as a mixture of two components: dry air and water vapor.
Cyclopentadine (C5H6) reacts with itself to form dicylopentadiene (C10H12). The following data were collected as the reaction proceeded.
Diagram the reverse of a dehydration synthesis reaction. Where might you find this type of reaction occurring in the human body. Is it an exothermic or endothermic reaction
Calculate the mass of Cu(NO3)2·3H2O needed to prepare 50.0mL of a 0.50 M Cu(II) solution?
Which choice correctly describes the electron pairs in the valence shell of the central atom in a molecule of Cl2O?
solid nahco3 is heated to 90degc. at equilibrium the total pressure of the gases produced is 0.545 atm. calculate
A hydrocarbon gas contains 81.71% carbon and 18.29% hydrogen, by mass. At STP. 4.20 L of the gas has a mass of 8.27 g. What is the molecular formula for the compound
Consider the titration of 50.0 mL of 0.20 M NH 3 (K b =1.8×10 ?5 ) with 0.20 M HNO 3 . Calculate the pH after addition of 50.0 mL of the titrant.
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