You dissolve 40 grams of table salt into 0.25 l of water. what is the molarity of the solution?

 The  molarity  of the solution    is   2.736 M

calculation

Step 1: find  moles of  table  salt (Nacl)

moles =  mass ÷molar mass

from periodic table the  molar mass  of  table salt (NaCl) = 23+35.5 = 58.5 g/mol

moles is therefore = 40 g÷ 58.5 g/mol =0.684   moles

Step 2:  find  molarity

molarity =  moles÷ volume in liters

= 0.684  moles÷ 0.25 L=2.736 M

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