Mendeleev was the first to arrange elements in a table based on their properties.
Hey There !:
Molar mass of H₂O = 18.01 g/mol
Therefore:
1 mol H₂O ----------------- 18.01 g/mol
9.00 moles ---------------- ( mass of H₂O )
mass of H₂O = 9.00 x 18.01 / 1
mass of H₂O = 162.09 / 1
mass of H₂O = 162.09 grams
I hope that it helps !
Contractility, Excitability, Extensibility, Elasticity
Answer: gas particles that are in constant motion and exhibit perfectly elastic collisions
Explanation:
This the chemical equation of the reaction of Al and HCl
Al + HCl → AlCl3 + H2 (g)
When you balance the atomos you get:
2Al + 6HCl → 2AlCl3 + 3H2 (g) ------- you can check that here you have the same number of atoms of Al, H, and Cl in both sides.
The coefficients are:
2 for Al, 6 for HCl, 2 for AlCl3 , and 3 for H2.
Then, the answer is: the coefficient of HCl is 6