The chemical equation below shows the process of forming water. Balance the equation by calculating the coefficients. H2 + O2 H2O A. 2, 1, 2 B. 1, 1, 1 C. 1, 1, 2 D. 1, 2, 2

List four observations that indicate that a chemical reaction may be taking place

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes? or no? this question is worth 20 points! let it be correct!