ICP apec please help asap For a bond to be covalent, the electronegativity difference between the atoms must be: A. positive. B. greater than 1.7. C. less than 1.7. D. negative.

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 .

How would you reduce the volume of gas

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?