What is the total number of molecules of hydrogen in 0.25 mole of hydrogen? 1
6.0 10^23
2.
4.5 * 10^23
3
3.0 x 10^23
4
1.5 * 10^23

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

Which of these conditions most likely produces an unstable isotope?