Answer:
342
g/mol
Explanation:
Just get out that Periodic Table of the Elements, find the atomic masses for each atom, and add them up!
Credit to "SCooke" (User)
The answer is B because isotopes have the same number of protons and neutrons.
Cl2 + NaI -> NaCl + I2
We are unbalanced with Chlorine and Iodine so we can do this:
Cl2 + 2NaI -> 2NaCl + I2
Reactants: Cl = 2, Na = 2, I = 2
Products: Cl = 2, Na = 2, I = 2
So we are balanced.
Lithosphere is in between the crust and the athenosphere
Answer:
A. Oxygen is an element because its most basic unit is a single type of atom.
Explanation:
Oxygen is the chemical element with the symbol O and atomic number 8.