Which clue can be used to identify a chemical reaction as a combustion reaction

Which best explains why an iceberg floats?

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

Which of the following isotopes has the same number of neutrons as phosphorus-31?