Calculate the amount (mass) of acetaldehyde (C2H40, molar mass = 44.0526 g mol-') that causes a
bomb calorimeter with a heat capacity of 12.91 kJ °C 1 to have a temperature increase from 27.8 °C
to 41.7 °C. The ALU for the combustion of acetaldehyde is -1166.9 kJ mol-1

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nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

where are the choice options?