Donner la formule chimique des ions de soufre et de magnésium

The reaction q+r2=r2q is found to be first order in r2 and

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Displacement is the slope of a velocity vs. time graph a. true b. false