Question

What is the molarity of a solution in which 0.257 moles of HNO2 is dissolved in 490ml of water

Answer 1

= 0.524M

Step-by-step explanation:

data;

volume = 490ml

= 490 / 1000

= 0.49 dm^3

moles = 0.257 moles

molarity = ?

solution:

molarity =
`(no. of moles)/(volume in dm^3)`

= 0.257 / 0.49

molarity = 0.524M