What is always conserved in a chemical reaction?

a. mass is always conserved in a reaction.
b. energy is always conserved in a reaction.
c. mass and energy are both conserved.
d. nothing is always conserved in a reaction.

Answer explain why it is not possible to deduce a complete order of reactivity.

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

What is bromine+calcium iodide--> calcium bromide +iodine balanced