Please help! The law of conservation of mass was introduced in Unit 2. Use Dalton’s atomic theory to explain this law. (50 points)

Compare and contrast physical changes with chemical changes.

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

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it