In ordinary chemical and physical processes, what is true? (1) only mass is conserved
(2) mass, energy, and charge are conserved
(3) some mass is destroyed
(4) new matter is created

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Explain why scientists use shared characteristics to make cladograms.

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88