Concrete is a mixture not a chemical compound.
The chemical formula for diphosphorus tetraiodide is P2I4.
Sodium Nitride is Na3N
The chemical formuls for Sulfuric acid is H2SO4.
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Ca(NO3)2
The formula is Length X Width X Height.
C : refer to concret 20 : its Resistance of concret cube when we make test on it after 28 days measuring by N/mm2.
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Conversion formuls: 425 millimeters = 425 / 25.4 = 16.732 inches
iS A COMPOUND AND IT ALSO IS A MOLECULE AND ITS A FORMULS AND Y THE JUSTIN BIEBER<3
concret
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