Which characteristic provides clues to how igneous rocks were formes? a textures b color c luster d streaks

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous