What is the principle called the conversation of matter

The light bulb transfers electrical energy into light. What is one type of energy that is also generated that is NOT a desired effect?

A rectangular piece of platinum has dimensions of 3.50 cm*2.16 cm*1.08 cm and weighs 175.5 g. What is the density of platinum?

Earthquake damage causes two rabbits to be separated from the rest of the rabbits in their large habitat. They have no way to get back to their original habitat. The two rabbits mate with each other.

A substance placed in a container has a fixed volume and takes up the shape of the container. In which state does this substance exist

A marine aquarium is found to contain a salt concentration of 40 ppt. How many grams of salt are in one liter of the solution?

Which equation obeys the law of conservation of mass? A. 2Fe+3O2 - -> 2Fe2O3 B. 4Fe+O2--> 2Fe2O3 C. Fe+O2--> Fe2O2 D. 4Fe+3O2--> 2Fe2O3

Why do airbags fill evenly with gases?

In which of the following reactions will Kc = Kp? In which of the following reactions will Kc = Kp? (A) SO3 (g) + NO (g) ↔ SO2 (g) + NO2 (g) (B) 2 N2 (g) + O2 (g) ↔ 2 N2O (g) (C) 4 NH3 (g) + 3 O2 (g) ↔ 2 N2 (g) + 6 H2O (g) (D) 2 SO2 (g) + O2 (g) ↔ 2

Which tool is most suitable for a chemist to measure the mass of a liquid

What is the equation adheres to the law of conservation of matter