Question

How many grams of NaCl is needed to make 0.5 L of a 1g/ml solution?

Answer 1

500 g of NaCl.

Step-by-step explanation:

The given data is the volume (0.5 L) and density (1 g/mL). The question is asking for mass (grams). From volume and density, we can find the mass using the following formula:

`density=(mass)/(volume).`

And solving for mass, we're going to have:

`mass=density\cdot volume.`

But we have a problem. We need to use the correct units to find the mass. We can convert 0.5 L to mL (milliliters). Remember that 1 L equals 1000 mL, so the conversion is:

`0.5\text{ L}\cdot\frac{1000\text{ mL}}{1\text{ L}}=500\text{ mL.}`

And now, with this volume, we can find the mass using the formula of mass:

`\begin{gathered} mass=1(g)/(mL)\cdot500\text{ mL,} \\ mass=500\text{ g.} \end{gathered}`

We're going to need 500 g of NaCl to make 0.5 L of a 1 g/mL solution.