por la combustión de la fosfina se obtiene el pentóxido de difosforo según la siguiente reacción: 2PH3(g) + 4O2(g) P2O5 (s)+ 3H2O(l). Si combustionan 34g de fosfina . ¿Cuántos litros de oxígeno se consumen?

the correct answer is answer a. a mixture

no other options make sense

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  - sprinkles

a

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.