Limestone is a sedimentary rock, whereas marble is metamorphic. These two rock types can be distinguished by their textures. ... 2- Gabbro and basalt are two igneous rocks having the same chemical composition, and the same minerals (plagioclase feldspar + pyroxene), but are of different origins.
Igneous rocks are formed by crystallization or solidification of lava or magma. According to the mineralogical content Igneous rocks are Felsic (High silicon), Mafic (less silicon) and ultramafic (lowest silicon). Felsic includes Granite(intrusive) and Rhyolite(extrusive), Mafic includes Gabbro (intrusive) and Basalt(extrusive), Ultramafic includes Peridotite (Intrusive) and Komatite (extrusive). Only Gabbro and Basalt are having same mineral composition.
your chosen answer is right as unsaturated mean contains double bond and 1st and 3rd is Wrong as Carbon only can have 4 bonds and 2nd is Wrong as it is saturated.
There can be three mole ratios that can be written involving three substances.It depends on the constant of your reactant to your product. It also depends on the asked mole ratio. But the maximum would be 3 mole ratios because you have 3 substances in your reaction.
