What is the purpose of standard units of measurement?

For the reaction: 2H2O2 → 2H2 + 2O2, what is the total number of moles of O2 produced from the complete decomposition of 8 moles H2O2? A) 2 moles B) 4 moles C) 8 moles D) 16 moles

If element X has 49 protons, how many electrons does it have? Your Answer:

According to the collision theory and the model created to explain the collision theory, why does a catalyst cause a reaction to speed up? It lowers the required activation energy. It increases the collisions per minute.

the law of conservation of mass states that in achemical reaction, matter is not cratered or destroyed. is it True or False

What is the importance of the coefficients in a balanced chemical reaction?

In which orbital does an electron in a bromine atom experience the smallest?

What characteristics of water allow it to have high surface tension?

Obtaining scientific data from a distance is called?

What is organic chemistry?

What is the total number of electrons shared in a double covalent bond between two atoms? (1) 1 (3) 8 (2) 2 (4) 4