D.The products will have at least 2 Na atoms and 1 O atom.
<h3>Further explanation
</h3>
Conservation of mass states that
<em>In a closed system, the masses before and after the reaction are the same
</em>
So it can be concluded
- mass of the reactants = mass of the products
- mass cannot be created or destroyed
- The number of atoms involved in a reaction remains the same⇒ number of moles also the same
- chemical equation in balanced form
So the number of atoms in reactants and products remains the same
Because one of the reactants in a reaction is Na₂O, so <em>The products will have at least 2 Na atoms and 1 O atom.</em>
Density = mass/V = MW P / RT
density = 64.1 g/mol X 1.2 atm / 0.0821 Latm/molK (271K) = 3.46 g/L
You mix 35mL of 0.54M NaI with 14mL of 0.84M Pb(NO3)2.
Energy in a chemical reaction is not created nor destroyed, it's always conserved based on the law of conservation of energy.
1 mole = 70.9
X mole = 140
X=1.9746 moles
X= 1.98 when rounded to 3 significant figures.