Respuesta :

Answer:

We need 5 tablets.

Explanation:

We need to prepare 250 mL of a 1 : 5 solution.

When we are talking about solutions , '' a : b '' is known as the solution ratio.

Where ''a'' and ''b'' are integer numbers.

In our exercise, we have a 1 : 5 solution ratio. This means that we will have 1 gram of solute for each 5 mL of solution.

To calculate the mass of solute we can write the following :

[tex]\frac{1g}{5mL}=\frac{X}{250mL}[/tex]

Notice that we equalize the solution ratio to the mass of solute ''[tex]X[/tex]'' divided by the total volume of solution (250 mL).

Solving for [tex]X[/tex] ⇒

[tex]X=\frac{(1g).(250mL)}{5mL}[/tex] ⇒ [tex]X=50g[/tex]

We found out that we need 50 g of solute.

Given that each tablet has 10 g of solute ⇒

[tex]\frac{50g}{10\frac{g}{tablet}}=5tablets[/tex]

We need five 10-gram tablets to prepare the solution.