# Question #c0970

##### 2 Answers

#### Answer:

#### Explanation:

Remember that the formula for moles,

Therefore, we must first calculate the mass of

To do this, we can use the formula for density,

The density of sodium chloride is

So input:

Now we may use

The molar mass of sodium chloride is

So simply input:

#### Answer:

#### Explanation:

Well, we'll need a few steps here...

First, know that

Now, we can use the density equation to find the mass of the sodium chloride:

The density of sodium chloride is

So, we have

Next, we have to use the molar mass formula to find the amount of moles.

The molar mass of sodium chloride is

So, our final answer is