Ancient Romans built often out of bricks and mortar. A key ingredient in their mortar was quicklime (calcium oxide), which they produced by roasting limestone (calcium carbonate). 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid calcium carbonate (OCACO,) into solid calcium oxide and gaseous carbon dioxide. do Ar 2. Suppose 68.0 L of carbon dioxide gas are produced by this reaction, at a temperature of 280.0 °C and pressure of exactly 1 atm. Calculate the mass of calcium carbonate that must have reacted. Round your answer to 3 significant digits. Check Explanation / Privacy Terms of Use O 2019 McGraw-Hill Education. All Rights Roserved. 6:48 PM 12/5/2019 99+ Type here to search hp pg dn pg up end ins prt sc home delete f12 f11 f10 t9 f8 f6 15 13 * f2 fi esc unu lock backspace & 6. 8 6. 4 pg uc home CH %23 bl

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.