# How do you calculate the mass of lead (II) nitrate, #Pb(NO_3)_2#, necessary to make 50.0 mL of a 0.100 M solution?

##### 1 Answer

Apr 27, 2017

#### Answer:

1.655 gm

#### Explanation:

First, we'll look at formula for Molarity.

Molarity = No. of moles of solute / Vol. of solution (in L)

Before putting values, it helps to know that

Now,

Now we also know that

Molar mass of

Given mass

So mass of