Question

A sample of NaNO3 weighing 0.38 g is placed 250 ml volumeric flask .The flask is filled with water to mark on the neck.What is molarity of the solution?​

Answer 1

Answer:

250ml

Explanation:

U Can Check On Help book

Answer 2

Answer:

0.0176

Explanation:

given mass = 0.38g

molar mass = 23+14+48=85g

• moles= given mass / molar mass

0.38/85 = 0.0044 moles (1)

now 250ml in litre will be

250/1000=4litre(2)

• molarity = moles of solute/ volume of solution in litre

• from 1 &2
• 0.0044×4= 0.0176 m