A chemical reaction occurs. Which of the following would indicate that energy is transformed during the reaction? A. light is produced B. an electrical charge is produced C. heat is produced D. all of these

A compound is found to contain only 24.5 g nitrogen and 70.0 g oxygen. what is the compounds empirical formula.

At constant volume, the pressure of gas Y increases with increasing temperature because as the temperature increases, 1. The mass of why molecules increases 2. Molecular collisions are more elastic 3. Molecular volume of y increases 4.

While looking at neon on the periodic table a student needs to find an element with a smaller atomic mass in the same group where should the student look?

Why do scientists need governmental funding?

What is the name of CO2

What is the temperature in Celsius of 308 K?

Why does metal need to be extracted from an ore before it can be used?

If heat is released, how does the solution feel?

What is the mass number of an ion with 107 electrons, 157 neutrons, and a 1 charge?

Which of the following is true about compounds