Question

How many moles present in 29.25g of NaCL

Answer 1

Easy question

No of moles = Given mass / Molar mass

= 29.25/ 58.5

= 1/2

Answer is 0.5 moles.

Answer 2

Answer:

The number of moles present in 29.25g of NaCl is 0.5moles.

Explanation:

Mole:

• A mole is defined as the mass of the substance which consists of the equal quantity of basic units.

• The basic units can be molecules, atoms or formula units based on the substance.

Finding number of moles:

• Number of moles can be found by dividing the weight of the substance with the molar mass of the substance.
• No. of moles = (mass of substance)/(mass of one mole)

  Given substance is NaCl.

     mass/weight of NaCl = 29.25g

       molar mass of NaCl = 23+35.5 = 58.5g

   Now we find the number of moles.

     By the formula,

          no. of moles = (weight of NaCl)/(molar mass of NaCl)

                                = 29.25/58.5

                                = 1/2

                                = 0.5 moles

  Hence, the number of moles present in 29.25g of NaCl = 0.5moles

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