Chemistry, 17.10.2021 17:30 morrisjillian23
La population de la Terre est d'environ 6,6 milliards
d'humains. - Supposons que toutes ces personnes comptent
des particules identique à une vitesse de deux particules
par seconde. Combien d'années leur faudra-t-il compter 6,0 X 10^23 particules ? Considérez qu'il y a 365 jours dans une année.
Answers: 1
Chemistry, 22.06.2019 03:30
Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?
Answers: 3
Chemistry, 22.06.2019 23:00
What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures
Answers: 1
Chemistry, 23.06.2019 06:30
Consider the heating curve of h2o and line segments a, b, and c. several changes are taking place at a, b, and c. all but one would be an appropriate description as e move through segments a, b and then c.
Answers: 3
La population de la Terre est d'environ 6,6 milliards
d'humains. - Supposons que toutes ces person...
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