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1A. An ideal gas at 15.0 °C and a pressure of 1.08 x 105 Pa occupies...

1A. An ideal gas at 15.0 °C and a pressure of 1.08 x 105 Pa occupies a volume of 4.20 m3. (a) How many moles of gas are present? (b) If the volume is raised to 6.91 m3 and the temperature raised to 29.2 °C, what will be the pressure of the gas?

(a) Number Units
(b) Number Units

B. The chlorophyll-a molecule (C55H72MgN4O5) is important in photosynthesis. (a) Determine its molecular mass (in atomic mass units). (b) What is the mass (in grams) of 3.30 moles of chlorophyll-a molecules?

(a) Number Units (6 signifant figures)


(b) Number Units

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