Which types of changes must follow the law of conservation of mass? Both physical and chemical changes
Neither physical nor chemical changes
Only physical changes
Only chemical changes

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process