What is the Molarity?

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What is the Molarity?

34 grams of NaCl is dissolved in 120 mL of water.

2006-12-05 06:05:50 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

Molarity=moles solute/liters solution
convert mass to moles
convert volume to liters
?M= (34gNaCl)/(120ml)x[(1molNaCl)/(58.46gNaCl)]x
[(1000ml)/(1L)] = 4.85M NaCl

2006-12-05 06:23:23 · answer #1 · answered by rm 3 · 0⤊ 0⤋

you must calculate concentration in 1L

c = 34/0.12 = 283.3g/l

And to find the molarity you divide by molar mass of NaCl = 58.5 g

m = 183.3/58.5 = 4.84 moles/liter

2006-12-05 14:11:15 · answer #2 · answered by maussy 7 · 0⤊ 0⤋