Examine the data above (boiling points of non-metal hydrides as a function of period). Identify the general trend observed, explain what causes the general trend, and identify a possible reason for the “statistical outliers” (H2O, HF, and NH3).

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule