1.

Phosphine contains 91.1% phosphorous and 8.9 % hydrogen. Water contains 88.8% oxygen and 11.2% hydrogen. Phosphorous tetroxide contains 56.4% phosphorous and 43.6% oxygen. Show that these results prove the validity of reciprocal proportions.​

Answer»

EXPLANATION:

FIRST to have a COFFEE ☕ then OTHERS.....!!!!!



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