How much NaCl (58.44 g/mol) would be needed to make 500 ml of a 2mM NaCl solution?
M = mol /V
V = 500 ml = 0.5 L
M = 2*10^-3 M
mol = MV = (2*10^-3)*0.5 = 0.001mol of NACl needed
mass = mol*MW = 0.001*58.44 = 0.05844 g of NaCl needed
How much NaCl (58.44 g/mol) would be needed to make 500 ml of a 2mM NaCl...
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