dashaunpeele
19.02.2020 •
Chemistry
The distance (d) traveled by an automobile moving at an average speed of s is directly proportional to the time (t) spent travelling. The proportionality constant is the average speed. (1) Complete the symbolic expression of this relationship:(2) If it takes the automobile 2.09 hours to travel a distance of 153 miles, what is numerical value for the proportionality constant using the units given
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Ответ:
One mole is defined as the amount of substance containing as many elementary entities (atoms, molecules, ions, electrons, radicals, etc.) as there are atoms in 12 grams of carbon-12 (6.023 x 1023). The mass of one mole of a substance equals its relative molecular mass expressed in grams. Also spelled as mol.