Answer: 429 grams of 
should be added to 1.3 L of water to prepare 2.0 M solution
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
where,
n = moles of solute = 
= volume of solution in Liters
Now put all the given values in the formula of molarity, we get
Therefore, 429 grams of should be added to 1.3 L of water to prepare 2.0 M solution
(On my left) (On my right side)
Na: 1. Na:1
Cl:2. Cl:1
Na:1 x 2 =2
Na:1 x 2=2
Cl: 1 x 2 = 2
Answer:
2Na + Cl2 -> 2NaCl
0.90g /cm^2
Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume. To calculate for the density of the unknown metal, we simply divide the mass of the substance by the volume measured. We do as follows:
Density = mass / volume
Density = 222.50 g / 25 mL
Density = 8.9 g/mL
Hi what do you mean by this? i dont understand at all pls explain :)
