Question

If 250 ml of 1M nacl is to be prepared, how many grams of nacl is required???...... plz ans fast

Answer 1

Here,

1M = no. of moles / volume In liter

Given volume = 250 ml = 0.25 L

no. of moles = 1×v = 0.25 moles

molecular Mass of nacl = 58.5 × 0.25 = 14.6 g

thus 14.6 g nacl is needed

Answer 2

1M nacl means
1000ml solution contains 1 mole of nacl
So,
250 ml contains 0•25 moles of nacl, i. e, 0.25× 58•4g=14•6gm of Nacl