Question

0. 090 moles of sodium sulfate is dissolved in a 12 ml solution. What is the molarity of the solution?

Answer 1

`\huge{ \boxed{ \boxed{7.5 \: M}}}`

Step-by-step explanation:

The molarity of sodium sulfate given its volume and number of moles can be found by using the formula;

`c = (n)/(v) \\`

where

c is the concentration in M , mol/dm³ or mol/L

v is the volume in L or dm³

n is the number of moles

From the question.

n = 0.09 moles

v = 12 ml

Using the conversion,

1000 ml = 1 L

12 ml = 0.012 L

`c = (0.09)/(0.012) = 7.5\\`

We have the final answer as

7.5 M