Chemistry, 05.05.2020 11:08 samanthadiva
Cuando un pastel se deja a la intemperie por muchos días, este se descompone generando otras sustancias. El cambio que sufre el pastel se conoce con el nombre de:
Seleccione una:
a. Cambio reversible.
b. cambio natural.
c. Reacción química.
d. Cambio físico.
Answers: 2
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Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
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What do we call the rows on the periodic table? a. periodb. familyc. groupd. metals
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Cuando un pastel se deja a la intemperie por muchos días, este se descompone generando otras sustanc...
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