What are examples of a chemical reaction? Select all that apply. A(2AgI + Na2S → Ag2S + 2NaI B)4FeS + 7O2 → 2Fe2O3 + 4SO2 C) H2O → SiO2 D)SnO2 → Sn + 2H2O

Akno3 solution containing 51 g of kno3 per 100.0 g of water is cooled from 40 ∘c to 0 ∘c. what will happen during cooling?

An unknown insoluble substance displaced the water shown. it's mass is indicated on the triple beam balance. mass = a. 694 b. 693.5 c. 693.0 d.693.8

An ice cube with a volume of 45.0ml and a density of 0.9000g/cm3 floats in a liquid with a density of 1.36g/ml. what volume of the cube is submerged in the liquid