Which phrase best describes a chemical reaction? A. mixing two substances B. the combustion of a substance C. forming or breaking bonds D. the decomposition of particles

Forensic scientists use science find evidence at a crime scene. Which sentence describes how forensic scientists could use observation to determine the time that a crime took place? A. They could observe that insects interact with dead bodies. B.

If the net forces on an object is 0 N, the forces are considered unbalanced true or false

Plumbers, welders, or glass blowers often use the gas propane (C3H8) because it burns in oxygen with a very hot flame. The products of the combustion of propane are carbon dioxide and water vapor.

Which statement is true for all equilibrium systems? A. The mass of the reactants is equal to the mass of the products. B. The addition of a catalyst changes the equilibrium concentrations. C.

1. A gas has a volume of 50.0 mL at a temperature of - 73°C. What volume would the gas occupy at a temperature of - 123°C? * *Celsius

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.

What element has the electron arrangement 2,8,4?

If you get pregnant in Dec how long will it take for u to get to second trimester

Name the following compound HClO