Question

How many moles of `Sr(NO_3)_2` would be used in the preparation of 2.50 L of a 3.5 M solution?

Answer 1

`eta=8.8" mol of " Sr(NO_3)2`

Explanation:

The problem can be directly solved using the standard formula

`"Molarity"(M)=(("number of moles")(eta))/(("Liter solution")(V)`, so that

`eta=(M)xx(V)`

`eta=(3.5mol)/cancel(L)xx2.50cancelL`

`eta=8.8mol`